Poking at the Topics Classifier

_topic-classifier.md

Poking at the Topics Classifier

I just spent some time poking at the Topics classifier (available at chrome://topics-internals/; Model version: 2206021246).

With the complete list of 349 topics in topics.txt (source), I generated some names based on the topic strings. This just takes the last component of the topic, and hyphenates it, as follows:

sed -e 's/&/ and /g;s/  */-/g;s/[,()]//g;s/.*[ \/]-*\([-a-zA-Z]*\)$/\1.com/' topics.txt

For example, this turns "/Arts & Entertainment/Movies/Thriller, Crime & Mystery Films" into the domain name "Thriller-Crime-and-Mystery-Films.com".

Running this list of names through the classifier takes a surprisingly long time to run (many seconds). I then copied the results into a temporary file and assembled a complete summary:

paste <(i=0; while [[ "$i" -lt 349 ]]; do i=$((i+1)); echo $i.; done) topics.txt tmp.txt > dotcom.txt

After doing this, I ran the same for different domain extensions, like ".net.nz", ".github.io", and ".shopify.com".

A sanity check shows that the classifier does seem to pick up on these names, but not all of them. The following simple script does that check. Running that shows:

$ python topic-check.py < dotcom.txt
Found 158 names with a matching classification
... of which 64 names produced additional classifications
Found 21 names with no classification
Most common classifications:
    23x 299. Sports
    19x 243. News
    18x 1. Arts & entertainment
    17x 103. Business & industrial
    16x 23. Music & audio
    13x 183. Computer & video games
    12x 289. Shopping
    11x 12. Movies
    11x 57. Autos & vehicles
    10x 215. Internet & telecom
$ python topic-check.py < netnz.txt
Found 158 names with a matching classification
... of which 77 names produced additional classifications
Found 18 names with no classification
<cut>
$ python topic-check.py < githubio.txt
Found 76 names with a matching classification
... of which 21 names produced additional classifications
Found 135 names with no classification
<cut>
$ python topic-check.py < shopify.txt
Found 109 names with a matching classification
... of which 43 names produced additional classifications
Found 80 names with no classification
<cut>

Curiously, the generic extensions seem to be ignored fairly well. The ".github.io" extension seems to wash out a lot of the classification detail, with the ".shopify.com" extension washing out slightly less.

The next check is a comparison of the classifications:

comm --total --nocheck-order <(cut -f 4- -d " " dotcom.txt) <(cut -f 4- -d "  " netnz.txt)

The extensions that produced the most identical classifications was ".com" and ".net.nz", which only agree on just 25 of the 349 names. ".github.io" agreed with ".com" on only 6 names.

Misclassifications seem to frequently be the result of choosing a more generic topic rather than the more specific one. For instance, "16. /Arts & Entertainment/Movies/Cult & Indie Films" as "Cult-and-Indie-Films.com" was classified as simply "12. Movies" and sometimes "43. Online video".

The 33 categories for ".com" names under "/Sports" produced 18 classifications that use that top-level item, with 5 additional classifications for broadly relevant names, except a clear misclassification of "Babies-and-Toddlers.com".

In comparison, the distribution of classifications of "243. News" is far more diverse. This classification is frequently made at the same time as other classifications. Some of these seem obvious or broadly reasonable given some inferences ("Live-Sporting-Events.com", "Stocks-and-Bonds.com"), but others are bizarre ("Computer-Peripherals.com", "Business-Operations.com", "Sedans.com").

Random inputs

When fed random inputs, things get interesting. Take a domain with a strong classification, like "netflix.com" (this classifies strongly as "43. Online Video"), which appears to be part of the training data.

Adding a subdomain of a single letter, such as "a.netflix.com", has no appreciable impact on the output. Some of these single-letter extensions add a classification of "12. Movies" or "1. Arts & entertainment", but none lose the primary classification of "43. Online Video". With 10 randomly chosen letters, the primary classification disappears a few times, with "100. Books & literature" appearing sometimes.

At 100 randomly chosen letters, the model is completely lost. Three outcomes are most common at this point: no classification, "243. News", and "245. Local news". There is a random scattering of a few other topics, but no further appearance of the primary classification.

Overriding a Strong Classification

Adding selected substrings within the 100 random letters does not seem to change this classification. Even some direct and explicit additions, like "baby-toddler-clothing.netflix.com" failed to guide the algorithm, producing "207. Home & garden".

An attempt to classify under "/Books & Literature" took some guessing. "reading-literature.netflix.com" produced no classification, "literature-review.netflix.com" produced the baseline "43. Online video", whereas "literature-novels.netflix.com" produced "1. Arts & entertainment" and "100. Books & literature".

The degree to which being explicit was necessary is somewhat extreme. "cars.netflix.com" classifies as "43. Online video", and "cars-vehicles.netflix.com" produces no classification. "vehicles-mercedes.netflix.com" adds "57. Autos & vehicles" to the base "43. Online video". To get just "57. Autos & vehicles", something as redundant as "vehicles-ford-volkswagen.netflix.com" or "toyota-nissan-jeep.netflix.com" is needed.

Boosting Feasibility

As expected based on the limited amount of information that can be provided as input, the model is pretty crude, but it seems to be broadly effective at picking out keywords. The classifications the model produces are not entirely stable across different top-level domains. Most of that instability appears to be down to picking up or losing additional classifications that are more general or conceptually adjacent.

The idea that a small amount of tweaking is all that is necessary to boost certain topics doesn't work out. In practice, a strong classification, especially one based on a distinct brand name, is difficult to override. Multiple additional keywords are needed to first negate the effect of the keyword and then produce a new classification.

This might make any boosting attempt more apparent to users, though it might be possible to use a correct-battery-horse-staple style of subdomain naming to blind users to any such attempt.

dotcom.txt

1.	/Arts & Entertainment	Arts-and-Entertainment.com	1. Arts & entertainment
2.	/Arts & Entertainment/Acting & Theater	Acting-and-Theater.com	243. News 103. Business & industrial
3.	/Arts & Entertainment/Comics	Comics.com	3. Comics
4.	/Arts & Entertainment/Concerts & Music Festivals	Concerts-and-Music-Festivals.com	23. Music & audio 4. Concerts & music festivals
5.	/Arts & Entertainment/Dance	Dance.com	5. Dance
6.	/Arts & Entertainment/Entertainment Industry	Entertainment-Industry.com	103. Business & industrial
7.	/Arts & Entertainment/Humor	Humor.com	7. Humor
8.	/Arts & Entertainment/Humor/Live Comedy	Live-Comedy.com	46. TV comedies 1. Arts & entertainment
9.	/Arts & Entertainment/Live Sporting Events	Live-Sporting-Events.com	243. News 299. Sports
10.	/Arts & Entertainment/Magic	Magic.com	10. Magic
11.	/Arts & Entertainment/Movie Listings & Theater Showtimes	Movie-Listings-and-Theater-Showtimes.com	12. Movies
12.	/Arts & Entertainment/Movies	Movies.com	12. Movies
13.	/Arts & Entertainment/Movies/Action & Adventure Films	Action-and-Adventure-Films.com	43. Online video 12. Movies
14.	/Arts & Entertainment/Movies/Animated Films	Animated-Films.com	12. Movies
15.	/Arts & Entertainment/Movies/Comedy Films	Comedy-Films.com	1. Arts & entertainment 12. Movies
16.	/Arts & Entertainment/Movies/Cult & Indie Films	Cult-and-Indie-Films.com	12. Movies
17.	/Arts & Entertainment/Movies/Documentary Films	Documentary-Films.com	12. Movies
18.	/Arts & Entertainment/Movies/Drama Films	Drama-Films.com	12. Movies
19.	/Arts & Entertainment/Movies/Family Films	Family-Films.com	12. Movies
20.	/Arts & Entertainment/Movies/Horror Films	Horror-Films.com	12. Movies 20. Horror movies
21.	/Arts & Entertainment/Movies/Romance Films	Romance-Films.com	12. Movies
22.	/Arts & Entertainment/Movies/Thriller, Crime & Mystery Films	Thriller-Crime-and-Mystery-Films.com	215. Internet & telecom
23.	/Arts & Entertainment/Music & Audio	Music-and-Audio.com	23. Music & audio
24.	/Arts & Entertainment/Music & Audio/Blues	Blues.com	1. Arts & entertainment 23. Music & audio
25.	/Arts & Entertainment/Music & Audio/Classical Music	Classical-Music.com	23. Music & audio 25. Classical music
26.	/Arts & Entertainment/Music & Audio/Country Music	Country-Music.com	26. Country music
27.	/Arts & Entertainment/Music & Audio/Dance & Electronic Music	Dance-and-Electronic-Music.com	23. Music & audio 27. Dance & electronic music
28.	/Arts & Entertainment/Music & Audio/Folk & Traditional Music	Folk-and-Traditional-Music.com	289. Shopping
29.	/Arts & Entertainment/Music & Audio/Jazz	Jazz.com	29. Jazz
30.	/Arts & Entertainment/Music & Audio/Musical Instruments	Musical-Instruments.com	30. Musical instruments 23. Music & audio
31.	/Arts & Entertainment/Music & Audio/Pop Music	Pop-Music.com	23. Music & audio
32.	/Arts & Entertainment/Music & Audio/Rap & Hip-Hop	Rap-and-Hip-Hop.com	32. Rap & hip-hop
33.	/Arts & Entertainment/Music & Audio/Rock Music	Rock-Music.com	23. Music & audio 33. Rock music
34.	/Arts & Entertainment/Music & Audio/Rock Music/Classic Rock & Oldies	Classic-Rock-and-Oldies.com	25. Classical music 23. Music & audio
35.	/Arts & Entertainment/Music & Audio/Rock Music/Hard Rock & Progressive	Hard-Rock-and-Progressive.com	33. Rock music
36.	/Arts & Entertainment/Music & Audio/Rock Music/Indie & Alternative Music	Indie-and-Alternative-Music.com	43. Online video 23. Music & audio
37.	/Arts & Entertainment/Music & Audio/Soul & R&B	Soul-and-R-and-B.com	183. Computer & video games 1. Arts & entertainment
38.	/Arts & Entertainment/Music & Audio/Soundtracks	Soundtracks.com	30. Musical instruments 23. Music & audio
39.	/Arts & Entertainment/Music & Audio/Talk Radio	Talk-Radio.com	23. Music & audio
40.	/Arts & Entertainment/Music & Audio/World Music	World-Music.com	23. Music & audio
41.	/Arts & Entertainment/Music & Audio/World Music/Reggae & Caribbean Music	Reggae-and-Caribbean-Music.com	40. World music 23. Music & audio
42.	/Arts & Entertainment/Online Image Galleries	Online-Image-Galleries.com	250. Online communities 42. Online image galleries
43.	/Arts & Entertainment/Online Video	Online-Video.com	43. Online video
44.	/Arts & Entertainment/Opera	Opera.com	
45.	/Arts & Entertainment/TV Shows & Programs	TV-Shows-and-Programs.com	43. Online video
46.	/Arts & Entertainment/TV Shows & Programs/TV Comedies	TV-Comedies.com	43. Online video 1. Arts & entertainment
47.	/Arts & Entertainment/TV Shows & Programs/TV Documentary & Nonfiction	TV-Documentary-and-Nonfiction.com	1. Arts & entertainment
48.	/Arts & Entertainment/TV Shows & Programs/TV Dramas	TV-Dramas.com	48. TV dramas 43. Online video
49.	/Arts & Entertainment/TV Shows & Programs/TV Dramas/TV Soap Operas	TV-Soap-Operas.com	45. TV shows & programs
50.	/Arts & Entertainment/TV Shows & Programs/TV Family-Oriented Shows	TV-Family-Oriented-Shows.com	173. Cooking & recipes
51.	/Arts & Entertainment/TV Shows & Programs/TV Reality Shows	TV-Reality-Shows.com	51. TV reality shows 45. TV shows & programs
52.	/Arts & Entertainment/TV Shows & Programs/TV Sci-Fi & Fantasy Shows	TV-Sci-Fi-and-Fantasy-Shows.com	314. Fantasy sports
53.	/Arts & Entertainment/Visual Art & Design	Visual-Art-and-Design.com	224. Web design & development
54.	/Arts & Entertainment/Visual Art & Design/Design	Design.com	54. Design
55.	/Arts & Entertainment/Visual Art & Design/Painting	Painting.com	53. Visual art & design 55. Painting
56.	/Arts & Entertainment/Visual Art & Design/Photographic & Digital Arts	Photographic-and-Digital-Arts.com	146. Photo software 56. Photographic & digital arts
57.	/Autos & Vehicles	Autos-and-Vehicles.com	
58.	/Autos & Vehicles/Cargo Trucks & Trailers	Cargo-Trucks-and-Trailers.com	58. Cargo trucks & trailers
59.	/Autos & Vehicles/Classic Vehicles	Classic-Vehicles.com	57. Autos & vehicles 59. Classic vehicles
60.	/Autos & Vehicles/Custom & Performance Vehicles	Custom-and-Performance-Vehicles.com	57. Autos & vehicles 81. Vehicle parts & accessories
61.	/Autos & Vehicles/Gas Prices & Vehicle Fueling	Gas-Prices-and-Vehicle-Fueling.com	83. Vehicle shopping 292. Consumer resources
62.	/Autos & Vehicles/Motor Vehicles (By Type)	Motor-Vehicles-By-Type.com	292. Consumer resources 83. Vehicle shopping
63.	/Autos & Vehicles/Motor Vehicles (By Type)/Autonomous Vehicles	Autonomous-Vehicles.com	57. Autos & vehicles
64.	/Autos & Vehicles/Motor Vehicles (By Type)/Convertibles	Convertibles.com	275. Reference
65.	/Autos & Vehicles/Motor Vehicles (By Type)/Coupes	Coupes.com	289. Shopping
66.	/Autos & Vehicles/Motor Vehicles (By Type)/Hatchbacks	Hatchbacks.com	250. Online communities
67.	/Autos & Vehicles/Motor Vehicles (By Type)/Hybrid & Alternative Vehicles	Hybrid-and-Alternative-Vehicles.com	57. Autos & vehicles
68.	/Autos & Vehicles/Motor Vehicles (By Type)/Luxury Vehicles	Luxury-Vehicles.com	57. Autos & vehicles
69.	/Autos & Vehicles/Motor Vehicles (By Type)/Microcars & Subcompacts	Microcars-and-Subcompacts.com	250. Online communities
70.	/Autos & Vehicles/Motor Vehicles (By Type)/Motorcycles	Motorcycles.com	70. Motorcycles
71.	/Autos & Vehicles/Motor Vehicles (By Type)/Off-Road Vehicles	Off-Road-Vehicles.com	83. Vehicle shopping 57. Autos & vehicles
72.	/Autos & Vehicles/Motor Vehicles (By Type)/Pickup Trucks	Pickup-Trucks.com	72. Pickup trucks
73.	/Autos & Vehicles/Motor Vehicles (By Type)/Scooters & Mopeds	Scooters-and-Mopeds.com	70. Motorcycles
74.	/Autos & Vehicles/Motor Vehicles (By Type)/Sedans	Sedans.com	243. News 1. Arts & entertainment
75.	/Autos & Vehicles/Motor Vehicles (By Type)/Station Wagons	Station-Wagons.com	289. Shopping
76.	/Autos & Vehicles/Motor Vehicles (By Type)/SUVs & Crossovers	SUVs-and-Crossovers.com	57. Autos & vehicles
77.	/Autos & Vehicles/Motor Vehicles (By Type)/SUVs & Crossovers/Crossovers	Crossovers.com	57. Autos & vehicles
78.	/Autos & Vehicles/Motor Vehicles (By Type)/Vans & Minivans	Vans-and-Minivans.com	
79.	/Autos & Vehicles/Towing & Roadside Assistance	Towing-and-Roadside-Assistance.com	103. Business & industrial
80.	/Autos & Vehicles/Vehicle & Traffic Safety	Vehicle-and-Traffic-Safety.com	
81.	/Autos & Vehicles/Vehicle Parts & Accessories	Vehicle-Parts-and-Accessories.com	81. Vehicle parts & accessories
82.	/Autos & Vehicles/Vehicle Repair & Maintenance	Vehicle-Repair-and-Maintenance.com	57. Autos & vehicles
83.	/Autos & Vehicles/Vehicle Shopping	Vehicle-Shopping.com	83. Vehicle shopping
84.	/Autos & Vehicles/Vehicle Shopping/Used Vehicles	Used-Vehicles.com	289. Shopping 83. Vehicle shopping
85.	/Autos & Vehicles/Vehicle Shows	Vehicle-Shows.com	57. Autos & vehicles
86.	/Beauty & Fitness	Beauty-and-Fitness.com	97. Fitness
87.	/Beauty & Fitness/Body Art	Body-Art.com	87. Body art
88.	/Beauty & Fitness/Face & Body Care	Face-and-Body-Care.com	86. Beauty & fitness
89.	/Beauty & Fitness/Face & Body Care/Antiperspirants, Deodorants & Body Sprays	Antiperspirants-Deodorants-and-Body-Sprays.com	
90.	/Beauty & Fitness/Face & Body Care/Bath & Body Products	Bath-and-Body-Products.com	97. Fitness
91.	/Beauty & Fitness/Face & Body Care/Clean Beauty	Clean-Beauty.com	86. Beauty & fitness 88. Face & body care
92.	/Beauty & Fitness/Face & Body Care/Make-Up & Cosmetics	Make-Up-and-Cosmetics.com	99. Hair care 88. Face & body care
93.	/Beauty & Fitness/Face & Body Care/Nail Care Products	Nail-Care-Products.com	86. Beauty & fitness 88. Face & body care
94.	/Beauty & Fitness/Face & Body Care/Perfumes & Fragrances	Perfumes-and-Fragrances.com	94. Perfumes & fragrances
95.	/Beauty & Fitness/Face & Body Care/Razors & Shavers	Razors-and-Shavers.com	
96.	/Beauty & Fitness/Fashion & Style	Fashion-and-Style.com	289. Shopping 96. Fashion & style
97.	/Beauty & Fitness/Fitness	Fitness.com	97. Fitness
98.	/Beauty & Fitness/Fitness/Bodybuilding	Bodybuilding.com	98. Bodybuilding
99.	/Beauty & Fitness/Hair Care	Hair-Care.com	99. Hair care
100.	/Books & Literature	Books-and-Literature.com	100. Books & literature
101.	/Books & Literature/Childrens Literature	Childrens-Literature.com	101. Children's literature
102.	/Books & Literature/Poetry	Poetry.com	102. Poetry
103.	/Business & Industrial	Business-and-Industrial.com	103. Business & industrial
104.	/Business & Industrial/Advertising & Marketing	Advertising-and-Marketing.com	104. Advertising & marketing
105.	/Business & Industrial/Advertising & Marketing/Sales	Sales.com	126. Computers & electronics 103. Business & industrial
106.	/Business & Industrial/Agriculture & Forestry	Agriculture-and-Forestry.com	208. Gardening 106. Agriculture & forestry
107.	/Business & Industrial/Agriculture & Forestry/Food Production	Food-Production.com	173. Cooking & recipes
108.	/Business & Industrial/Automotive Industry	Automotive-Industry.com	83. Vehicle shopping
109.	/Business & Industrial/Aviation Industry	Aviation-Industry.com	109. Aviation industry
110.	/Business & Industrial/Business Operations	Business-Operations.com	1. Arts & entertainment 243. News
111.	/Business & Industrial/Business Operations/Flexible Work Arrangements	Flexible-Work-Arrangements.com	236. Jobs 112. Human resources
112.	/Business & Industrial/Business Operations/Human Resources	Human-Resources.com	1. Arts & entertainment 23. Music & audio
113.	/Business & Industrial/Commercial Lending	Commercial-Lending.com	149. Finance
114.	/Business & Industrial/Construction & Maintenance	Construction-and-Maintenance.com	114. Construction & maintenance
115.	/Business & Industrial/Construction & Maintenance/Civil Engineering	Civil-Engineering.com	279. Science
116.	/Business & Industrial/Defense Industry	Defense-Industry.com	103. Business & industrial
117.	/Business & Industrial/Energy & Utilities	Energy-and-Utilities.com	86. Beauty & fitness 254. People & society
118.	/Business & Industrial/Energy & Utilities/Water Supply & Treatment	Water-Supply-and-Treatment.com	
119.	/Business & Industrial/Hospitality Industry	Hospitality-Industry.com	126. Computers & electronics 103. Business & industrial
120.	/Business & Industrial/Manufacturing	Manufacturing.com	103. Business & industrial
121.	/Business & Industrial/Metals & Mining	Metals-and-Mining.com	33. Rock music
122.	/Business & Industrial/Pharmaceuticals & Biotech	Pharmaceuticals-and-Biotech.com	122. Pharmaceuticals & biotech
123.	/Business & Industrial/Printing & Publishing	Printing-and-Publishing.com	103. Business & industrial 123. Printing & publishing
124.	/Business & Industrial/Retail Trade	Retail-Trade.com	103. Business & industrial
125.	/Business & Industrial/Venture Capital	Venture-Capital.com	103. Business & industrial
126.	/Computers & Electronics	Computers-and-Electronics.com	243. News 279. Science 126. Computers & electronics
127.	/Computers & Electronics/Antivirus & Malware	Antivirus-and-Malware.com	127. Antivirus & malware
128.	/Computers & Electronics/Computer Peripherals	Computer-Peripherals.com	279. Science 243. News 126. Computers & electronics
129.	/Computers & Electronics/Consumer Electronics	Consumer-Electronics.com	126. Computers & electronics
130.	/Computers & Electronics/Consumer Electronics/Cameras & Camcorders	Cameras-and-Camcorders.com	130. Cameras & camcorders
131.	/Computers & Electronics/Consumer Electronics/Home Automation	Home-Automation.com	131. Home automation
132.	/Computers & Electronics/Consumer Electronics/Home Theater Systems	Home-Theater-Systems.com	239. Law & government
133.	/Computers & Electronics/Consumer Electronics/Wearable Technology	Wearable-Technology.com	
134.	/Computers & Electronics/Desktop Computers	Desktop-Computers.com	250. Online communities 140. Software
135.	/Computers & Electronics/Laptops & Notebooks	Laptops-and-Notebooks.com	135. Laptops & notebooks
136.	/Computers & Electronics/Network Security	Network-Security.com	137. Computer networks 136. Network security
137.	/Computers & Electronics/Networking	Networking.com	
138.	/Computers & Electronics/Networking/Distributed & Cloud Computing	Distributed-and-Cloud-Computing.com	215. Internet & telecom
139.	/Computers & Electronics/Programming	Programming.com	139. Programming
140.	/Computers & Electronics/Software	Software.com	140. Software
141.	/Computers & Electronics/Software/Audio & Music Software	Audio-and-Music-Software.com	23. Music & audio 140. Software
142.	/Computers & Electronics/Software/Desktop Publishing	Desktop-Publishing.com	142. Desktop publishing
143.	/Computers & Electronics/Software/Freeware & Shareware	Freeware-and-Shareware.com	140. Software
144.	/Computers & Electronics/Software/Graphics & Animation Software	Graphics-and-Animation-Software.com	144. Graphics & animation software
145.	/Computers & Electronics/Software/Operating Systems	Operating-Systems.com	126. Computers & electronics
146.	/Computers & Electronics/Software/Photo Software	Photo-Software.com	140. Software
147.	/Computers & Electronics/Software/Video Software	Video-Software.com	43. Online video 140. Software
148.	/Computers & Electronics/Software/Web Browsers	Web-Browsers.com	148. Web browsers
149.	/Finance	Finance.com	243. News 103. Business & industrial
150.	/Finance/Accounting & Auditing	Accounting-and-Auditing.com	150. Accounting & auditing
151.	/Finance/Accounting & Auditing/Tax Preparation & Planning	Tax-Preparation-and-Planning.com	103. Business & industrial
152.	/Finance/Credit Cards	Credit-Cards.com	149. Finance 152. Credit cards
153.	/Finance/Financial Planning & Management	Financial-Planning-and-Management.com	110. Business operations 103. Business & industrial
154.	/Finance/Financial Planning & Management/Retirement & Pension	Retirement-and-Pension.com	158. Insurance 154. Retirement & pension
155.	/Finance/Grants, Scholarships & Financial Aid	Grants-Scholarships-and-Financial-Aid.com	
156.	/Finance/Grants, Scholarships & Financial Aid/Study Grants & Scholarships	Study-Grants-and-Scholarships.com	156. Study grants & scholarships 229. Colleges & universities
157.	/Finance/Home Financing	Home-Financing.com	149. Finance
158.	/Finance/Insurance	Insurance.com	158. Insurance
159.	/Finance/Insurance/Auto Insurance	Auto-Insurance.com	158. Insurance 159. Auto insurance
160.	/Finance/Insurance/Health Insurance	Health-Insurance.com	158. Insurance
161.	/Finance/Insurance/Home Insurance	Home-Insurance.com	158. Insurance
162.	/Finance/Insurance/Life Insurance	Life-Insurance.com	158. Insurance
163.	/Finance/Insurance/Travel Insurance	Travel-Insurance.com	332. Travel & transportation
164.	/Finance/Investing	Investing.com	103. Business & industrial 164. Investing 243. News
165.	/Finance/Investing/Commodities & Futures Trading	Commodities-and-Futures-Trading.com	
166.	/Finance/Investing/Currencies & Foreign Exchange	Currencies-and-Foreign-Exchange.com	275. Reference
167.	/Finance/Investing/Hedge Funds	Hedge-Funds.com	164. Investing
168.	/Finance/Investing/Mutual Funds	Mutual-Funds.com	164. Investing
169.	/Finance/Investing/Stocks & Bonds	Stocks-and-Bonds.com	243. News 169. Stocks & bonds
170.	/Finance/Personal Loans	Personal-Loans.com	149. Finance
171.	/Finance/Student Loans & College Financing	Student-Loans-and-College-Financing.com	149. Finance
172.	/Food & Drink	Food-and-Drink.com	172. Food & drink 173. Cooking & recipes
173.	/Food & Drink/Cooking & Recipes	Cooking-and-Recipes.com	173. Cooking & recipes
174.	/Food & Drink/Cooking & Recipes/BBQ & Grilling	BBQ-and-Grilling.com	208. Gardening 174. BBQ & grilling
175.	/Food & Drink/Cooking & Recipes/Cuisines	Cuisines.com	173. Cooking & recipes
176.	/Food & Drink/Cooking & Recipes/Cuisines/Vegetarian Cuisine	Vegetarian-Cuisine.com	176. Vegetarian cuisine
177.	/Food & Drink/Cooking & Recipes/Cuisines/Vegetarian Cuisine/Vegan Cuisine	Vegan-Cuisine.com	177. Vegan cuisine
178.	/Food & Drink/Cooking & Recipes/Healthy Eating	Healthy-Eating.com	178. Healthy eating
179.	/Food & Drink/Food & Grocery Retailers	Food-and-Grocery-Retailers.com	172. Food & drink
180.	/Games	Games.com	1. Arts & entertainment 183. Computer & video games
181.	/Games/Billiards	Billiards.com	299. Sports 181. Billiards
182.	/Games/Card Games	Card-Games.com	183. Computer & video games 1. Arts & entertainment 182. Card games
183.	/Games/Computer & Video Games	Computer-and-Video-Games.com	
184.	/Games/Computer & Video Games/Action & Platform Games	Action-and-Platform-Games.com	1. Arts & entertainment 183. Computer & video games
185.	/Games/Computer & Video Games/Adventure Games	Adventure-Games.com	183. Computer & video games
186.	/Games/Computer & Video Games/Casual Games	Casual-Games.com	186. Casual games 183. Computer & video games 1. Arts & entertainment
187.	/Games/Computer & Video Games/Competitive Video Gaming	Competitive-Video-Gaming.com	43. Online video 183. Computer & video games
188.	/Games/Computer & Video Games/Massively Multiplayer Games	Massively-Multiplayer-Games.com	183. Computer & video games
189.	/Games/Computer & Video Games/Music & Dance Games	Music-and-Dance-Games.com	183. Computer & video games
190.	/Games/Computer & Video Games/Simulation Games	Simulation-Games.com	183. Computer & video games
191.	/Games/Computer & Video Games/Sports Games	Sports-Games.com	1. Arts & entertainment 183. Computer & video games
192.	/Games/Computer & Video Games/Strategy Games	Strategy-Games.com	183. Computer & video games
193.	/Games/Drawing & Coloring	Drawing-and-Coloring.com	193. Drawing & coloring
194.	/Games/Roleplaying Games	Roleplaying-Games.com	
195.	/Games/Table Tennis	Table-Tennis.com	243. News 299. Sports
196.	/Hobbies & Leisure	Hobbies-and-Leisure.com	207. Home & garden
197.	/Hobbies & Leisure/Anniversaries	Anniversaries.com	289. Shopping 196. Hobbies & leisure
198.	/Hobbies & Leisure/Birthdays & Name Days	Birthdays-and-Name-Days.com	198. Birthdays & name days
199.	/Hobbies & Leisure/Diving & Underwater Activities	Diving-and-Underwater-Activities.com	196. Hobbies & leisure
200.	/Hobbies & Leisure/Fiber & Textile Arts	Fiber-and-Textile-Arts.com	207. Home & garden
201.	/Hobbies & Leisure/Outdoors	Outdoors.com	201. Outdoors
202.	/Hobbies & Leisure/Outdoors/Fishing	Fishing.com	202. Fishing
203.	/Hobbies & Leisure/Outdoors/Hunting & Shooting	Hunting-and-Shooting.com	203. Hunting & shooting
204.	/Hobbies & Leisure/Paintball	Paintball.com	299. Sports 204. Paintball
205.	/Hobbies & Leisure/Radio Control & Modeling	Radio-Control-and-Modeling.com	205. Radio control & modeling
206.	/Hobbies & Leisure/Weddings	Weddings.com	206. Weddings
207.	/Home & Garden	Home-and-Garden.com	208. Gardening
208.	/Home & Garden/Gardening	Gardening.com	208. Gardening
209.	/Home & Garden/Home & Interior Decor	Home-and-Interior-Decor.com	207. Home & garden 209. Home & interior decor
210.	/Home & Garden/Home Appliances	Home-Appliances.com	210. Home appliances 207. Home & garden
211.	/Home & Garden/Home Improvement	Home-Improvement.com	207. Home & garden 211. Home improvement
212.	/Home & Garden/Home Safety & Security	Home-Safety-and-Security.com	
213.	/Home & Garden/Household Supplies	Household-Supplies.com	211. Home improvement 207. Home & garden
214.	/Home & Garden/Landscape Design	Landscape-Design.com	211. Home improvement 207. Home & garden
215.	/Internet & Telecom	Internet-and-Telecom.com	215. Internet & telecom 218. Phone service providers
216.	/Internet & Telecom/Email	Email.com	215. Internet & telecom
217.	/Internet & Telecom/ISPs	ISPs.com	103. Business & industrial
218.	/Internet & Telecom/Phone Service Providers	Phone-Service-Providers.com	129. Consumer electronics
219.	/Internet & Telecom/Search Engines	Search-Engines.com	219. Search engines
220.	/Internet & Telecom/Smart Phones	Smart-Phones.com	215. Internet & telecom
221.	/Internet & Telecom/Teleconferencing	Teleconferencing.com	81. Vehicle parts & accessories 57. Autos & vehicles
222.	/Internet & Telecom/Text & Instant Messaging	Text-and-Instant-Messaging.com	222. Text & instant messaging 215. Internet & telecom
223.	/Internet & Telecom/Web Apps & Online Tools	Web-Apps-and-Online-Tools.com	215. Internet & telecom
224.	/Internet & Telecom/Web Design & Development	Web-Design-and-Development.com	139. Programming 224. Web design & development
225.	/Internet & Telecom/Web Hosting	Web-Hosting.com	215. Internet & telecom
226.	/Jobs & Education	Jobs-and-Education.com	
227.	/Jobs & Education/Education	Education.com	227. Education
228.	/Jobs & Education/Education/Academic Conferences & Publications	Academic-Conferences-and-Publications.com	227. Education 275. Reference
229.	/Jobs & Education/Education/Colleges & Universities	Colleges-and-Universities.com	229. Colleges & universities
230.	/Jobs & Education/Education/Distance Learning	Distance-Learning.com	275. Reference 277. Foreign language study
231.	/Jobs & Education/Education/Early Childhood Education	Early-Childhood-Education.com	258. Parenting
232.	/Jobs & Education/Education/Early Childhood Education/Preschool	Preschool.com	227. Education
233.	/Jobs & Education/Education/Homeschooling	Homeschooling.com	227. Education 233. Homeschooling
234.	/Jobs & Education/Education/Standardized & Admissions Tests	Standardized-and-Admissions-Tests.com	
235.	/Jobs & Education/Education/Vocational & Continuing Education	Vocational-and-Continuing-Education.com	230. Distance learning 227. Education
236.	/Jobs & Education/Jobs	Jobs.com	238. Job listings
237.	/Jobs & Education/Jobs/Career Resources & Planning	Career-Resources-and-Planning.com	238. Job listings
238.	/Jobs & Education/Jobs/Job Listings	Job-Listings.com	238. Job listings
239.	/Law & Government	Law-and-Government.com	239. Law & government
240.	/Law & Government/Crime & Justice	Crime-and-Justice.com	240. Crime & justice
241.	/Law & Government/Legal	Legal.com	242. Legal services 241. Legal
242.	/Law & Government/Legal/Legal Services	Legal-Services.com	241. Legal
243.	/News	News.com	243. News
244.	/News/Economy News	Economy-News.com	149. Finance 244. Economy news
245.	/News/Local News	Local-News.com	243. News 275. Reference
246.	/News/Mergers & Acquisitions	Mergers-and-Acquisitions.com	250. Online communities
247.	/News/Politics	Politics.com	247. Politics
248.	/News/Weather	Weather.com	248. Weather
249.	/News/World News	World-News.com	243. News
250.	/Online Communities	Online-Communities.com	149. Finance
251.	/Online Communities/Dating & Personals	Dating-and-Personals.com	251. Dating & personals
252.	/Online Communities/Forum & Chat Providers	Forum-and-Chat-Providers.com	
253.	/Online Communities/Social Networks	Social-Networks.com	253. Social networks
254.	/People & Society	People-and-Society.com	243. News 1. Arts & entertainment
255.	/People & Society/Family & Relationships	Family-and-Relationships.com	255. Family & relationships
256.	/People & Society/Family & Relationships/Ancestry & Genealogy	Ancestry-and-Genealogy.com	256. Ancestry & genealogy
257.	/People & Society/Family & Relationships/Marriage	Marriage.com	257. Marriage
258.	/People & Society/Family & Relationships/Parenting	Parenting.com	258. Parenting
259.	/People & Society/Family & Relationships/Parenting/Adoption	Adoption.com	254. People & society 259. Adoption
260.	/People & Society/Family & Relationships/Parenting/Babies & Toddlers	Babies-and-Toddlers.com	289. Shopping 299. Sports
261.	/People & Society/Family & Relationships/Parenting/Child Internet Safety	Child-Internet-Safety.com	258. Parenting
262.	/People & Society/Science Fiction & Fantasy	Science-Fiction-and-Fantasy.com	
263.	/Pets & Animals	Pets-and-Animals.com	265. Pets 263. Pets & animals
264.	/Pets & Animals/Pet Food & Pet Care Supplies	Pet-Food-and-Pet-Care-Supplies.com	265. Pets
265.	/Pets & Animals/Pets	Pets.com	263. Pets & animals 265. Pets
266.	/Pets & Animals/Pets/Birds	Birds.com	196. Hobbies & leisure 289. Shopping
267.	/Pets & Animals/Pets/Cats	Cats.com	267. Cats
268.	/Pets & Animals/Pets/Dogs	Dogs.com	268. Dogs
269.	/Pets & Animals/Pets/Fish & Aquaria	Fish-and-Aquaria.com	269. Fish & aquaria
270.	/Pets & Animals/Pets/Reptiles & Amphibians	Reptiles-and-Amphibians.com	1. Arts & entertainment 243. News
271.	/Pets & Animals/Veterinarians	Veterinarians.com	239. Law & government
272.	/Real Estate	Real-Estate.com	272. Real estate
273.	/Real Estate/Lots & Land	Lots-and-Land.com	250. Online communities 183. Computer & video games
274.	/Real Estate/Timeshares & Vacation Properties	Timeshares-and-Vacation-Properties.com	
275.	/Reference	Reference.com	275. Reference
276.	/Reference/Educational Resources	Educational-Resources.com	227. Education
277.	/Reference/Foreign Language Study	Foreign-Language-Study.com	239. Law & government 275. Reference
278.	/Reference/How-To, DIY & Expert Content	How-To-DIY-and-Expert-Content.com	278. How-to, DIY & expert content
279.	/Science	Science.com	279. Science
280.	/Science/Augmented & Virtual Reality	Augmented-and-Virtual-Reality.com	253. Social networks 250. Online communities
281.	/Science/Biological Sciences	Biological-Sciences.com	281. Biological sciences 279. Science
282.	/Science/Biological Sciences/Genetics	Genetics.com	122. Pharmaceuticals & biotech
283.	/Science/Chemistry	Chemistry.com	283. Chemistry
284.	/Science/Ecology & Environment	Ecology-and-Environment.com	254. People & society 284. Ecology & environment
285.	/Science/Geology	Geology.com	275. Reference
286.	/Science/Machine Learning & Artificial Intelligence	Machine-Learning-and-Artificial-Intelligence.com	
287.	/Science/Physics	Physics.com	287. Physics
288.	/Science/Robotics	Robotics.com	126. Computers & electronics 103. Business & industrial
289.	/Shopping	Shopping.com	289. Shopping
290.	/Shopping/Antiques & Collectibles	Antiques-and-Collectibles.com	290. Antiques & collectibles
291.	/Shopping/Childrens Clothing	Childrens-Clothing.com	
292.	/Shopping/Consumer Resources	Consumer-Resources.com	275. Reference
293.	/Shopping/Consumer Resources/Coupons & Discount Offers	Coupons-and-Discount-Offers.com	293. Coupons & discount offers
294.	/Shopping/Costumes	Costumes.com	196. Hobbies & leisure 294. Costumes
295.	/Shopping/Flowers	Flowers.com	208. Gardening 295. Flowers
296.	/Shopping/Mens Clothing	Mens-Clothing.com	298. Women's clothing 289. Shopping
297.	/Shopping/Party & Holiday Supplies	Party-and-Holiday-Supplies.com	1. Arts & entertainment
298.	/Shopping/Womens Clothing	Womens-Clothing.com	298. Women's clothing 289. Shopping
299.	/Sports	Sports.com	299. Sports
300.	/Sports/American Football	American-Football.com	299. Sports 325. Soccer
301.	/Sports/Australian Football	Australian-Football.com	243. News 300. American football 299. Sports
302.	/Sports/Auto Racing	Auto-Racing.com	81. Vehicle parts & accessories 302. Auto racing
303.	/Sports/Baseball	Baseball.com	243. News 299. Sports 303. Baseball
304.	/Sports/Basketball	Basketball.com	299. Sports 243. News 304. Basketball
305.	/Sports/Bowling	Bowling.com	289. Shopping 299. Sports 305. Bowling
306.	/Sports/Boxing	Boxing.com	306. Boxing
307.	/Sports/Cheerleading	Cheerleading.com	307. Cheerleading
308.	/Sports/College Sports	College-Sports.com	229. Colleges & universities 308. College sports
309.	/Sports/Cricket	Cricket.com	243. News 299. Sports 309. Cricket
310.	/Sports/Cycling	Cycling.com	310. Cycling
311.	/Sports/Equestrian	Equestrian.com	265. Pets 311. Equestrian
312.	/Sports/Extreme Sports	Extreme-Sports.com	299. Sports
313.	/Sports/Extreme Sports/Climbing & Mountaineering	Climbing-and-Mountaineering.com	201. Outdoors 299. Sports
314.	/Sports/Fantasy Sports	Fantasy-Sports.com	314. Fantasy sports
315.	/Sports/Golf	Golf.com	315. Golf
316.	/Sports/Gymnastics	Gymnastics.com	299. Sports 316. Gymnastics
317.	/Sports/Hockey	Hockey.com	299. Sports 317. Hockey
318.	/Sports/Ice Skating	Ice-Skating.com	299. Sports
319.	/Sports/Martial Arts	Martial-Arts.com	55. Painting 53. Visual art & design
320.	/Sports/Motorcycle Racing	Motorcycle-Racing.com	70. Motorcycles
321.	/Sports/Olympics	Olympics.com	289. Shopping 299. Sports 321. Olympics
322.	/Sports/Rugby	Rugby.com	299. Sports 322. Rugby
323.	/Sports/Running & Walking	Running-and-Walking.com	323. Running & walking
324.	/Sports/Skiing & Snowboarding	Skiing-and-Snowboarding.com	299. Sports 324. Skiing & snowboarding
325.	/Sports/Soccer	Soccer.com	299. Sports 325. Soccer
326.	/Sports/Surfing	Surfing.com	326. Surfing 196. Hobbies & leisure
327.	/Sports/Swimming	Swimming.com	299. Sports
328.	/Sports/Tennis	Tennis.com	328. Tennis 299. Sports
329.	/Sports/Track & Field	Track-and-Field.com	215. Internet & telecom
330.	/Sports/Volleyball	Volleyball.com	330. Volleyball
331.	/Sports/Wrestling	Wrestling.com	331. Wrestling
332.	/Travel & Transportation	Travel-and-Transportation.com	332. Travel & transportation
333.	/Travel & Transportation/Adventure Travel	Adventure-Travel.com	332. Travel & transportation
334.	/Travel & Transportation/Air Travel	Air-Travel.com	332. Travel & transportation 334. Air travel
335.	/Travel & Transportation/Business Travel	Business-Travel.com	332. Travel & transportation
336.	/Travel & Transportation/Car Rentals	Car-Rentals.com	289. Shopping 336. Car rentals
337.	/Travel & Transportation/Cruises & Charters	Cruises-and-Charters.com	337. Cruises & charters
338.	/Travel & Transportation/Family Travel	Family-Travel.com	254. People & society
339.	/Travel & Transportation/Honeymoons & Romantic Getaways	Honeymoons-and-Romantic-Getaways.com	345. Beaches & islands
340.	/Travel & Transportation/Hotels & Accommodations	Hotels-and-Accommodations.com	340. Hotels & accommodations
341.	/Travel & Transportation/Long Distance Bus & Rail	Long-Distance-Bus-and-Rail.com	275. Reference
342.	/Travel & Transportation/Low Cost & Last Minute Travel	Low-Cost-and-Last-Minute-Travel.com	332. Travel & transportation
343.	/Travel & Transportation/Luggage & Travel Accessories	Luggage-and-Travel-Accessories.com	334. Air travel 332. Travel & transportation
344.	/Travel & Transportation/Tourist Destinations	Tourist-Destinations.com	344. Tourist destinations 349. Travel guides & travelogues
345.	/Travel & Transportation/Tourist Destinations/Beaches & Islands	Beaches-and-Islands.com	345. Beaches & islands
346.	/Travel & Transportation/Tourist Destinations/Regional Parks & Gardens	Regional-Parks-and-Gardens.com	106. Agriculture & forestry 208. Gardening
347.	/Travel & Transportation/Tourist Destinations/Theme Parks	Theme-Parks.com	215. Internet & telecom 250. Online communities
348.	/Travel & Transportation/Tourist Destinations/Zoos, Aquariums & Preserves	Zoos-Aquariums-and-Preserves.com	265. Pets
349.	/Travel & Transportation/Travel Guides & Travelogues	Travel-Guides-and-Travelogues.com	344. Tourist destinations 349. Travel guides & travelogues

topic-check.py

import fileinput
from operator import itemgetter
import re

nsame = 0
nextra = 0
nnone = 0
hist = dict()
p = re.compile(r"^(\d+)\.[A-Za-z&/ ]+")
for line in fileinput.input():
    n, t, d, c = line.split("\t", 4)

    same = False
    count = 0

    m = p.match(c)
    while m is not None:
        count = count + 1
        if f"{m.group(1)}." == n:
            same = True
        full = m.group(0).strip()
        hist[full] = hist.get(full, 0) + 1
        c = c[len(m.group(0)):]
        m = p.match(c)
    
    if same:
        nsame = nsame + 1
        if count > 1:
            nextra = nextra + 1
    elif count == 0:
        nnone = nnone + 1

print(f"Found {nsame} names with a matching classification")
print(f"... of which {nextra} names produced additional classifications")
print(f"Found {nnone} names with no classification")

print("Most common classifications:")
for h in sorted(hist.items(), key=itemgetter(1), reverse=True)[:10]:
    print(f"    {h[1]}x {h[0]}")

topics.txt

/Arts & Entertainment
/Arts & Entertainment/Acting & Theater
/Arts & Entertainment/Comics
/Arts & Entertainment/Concerts & Music Festivals
/Arts & Entertainment/Dance
/Arts & Entertainment/Entertainment Industry
/Arts & Entertainment/Humor
/Arts & Entertainment/Humor/Live Comedy
/Arts & Entertainment/Live Sporting Events
/Arts & Entertainment/Magic
/Arts & Entertainment/Movie Listings & Theater Showtimes
/Arts & Entertainment/Movies
/Arts & Entertainment/Movies/Action & Adventure Films
/Arts & Entertainment/Movies/Animated Films
/Arts & Entertainment/Movies/Comedy Films
/Arts & Entertainment/Movies/Cult & Indie Films
/Arts & Entertainment/Movies/Documentary Films
/Arts & Entertainment/Movies/Drama Films
/Arts & Entertainment/Movies/Family Films
/Arts & Entertainment/Movies/Horror Films
/Arts & Entertainment/Movies/Romance Films
/Arts & Entertainment/Movies/Thriller, Crime & Mystery Films
/Arts & Entertainment/Music & Audio
/Arts & Entertainment/Music & Audio/Blues
/Arts & Entertainment/Music & Audio/Classical Music
/Arts & Entertainment/Music & Audio/Country Music
/Arts & Entertainment/Music & Audio/Dance & Electronic Music
/Arts & Entertainment/Music & Audio/Folk & Traditional Music
/Arts & Entertainment/Music & Audio/Jazz
/Arts & Entertainment/Music & Audio/Musical Instruments
/Arts & Entertainment/Music & Audio/Pop Music
/Arts & Entertainment/Music & Audio/Rap & Hip-Hop
/Arts & Entertainment/Music & Audio/Rock Music
/Arts & Entertainment/Music & Audio/Rock Music/Classic Rock & Oldies
/Arts & Entertainment/Music & Audio/Rock Music/Hard Rock & Progressive
/Arts & Entertainment/Music & Audio/Rock Music/Indie & Alternative Music
/Arts & Entertainment/Music & Audio/Soul & R&B
/Arts & Entertainment/Music & Audio/Soundtracks
/Arts & Entertainment/Music & Audio/Talk Radio
/Arts & Entertainment/Music & Audio/World Music
/Arts & Entertainment/Music & Audio/World Music/Reggae & Caribbean Music
/Arts & Entertainment/Online Image Galleries
/Arts & Entertainment/Online Video
/Arts & Entertainment/Opera
/Arts & Entertainment/TV Shows & Programs
/Arts & Entertainment/TV Shows & Programs/TV Comedies
/Arts & Entertainment/TV Shows & Programs/TV Documentary & Nonfiction
/Arts & Entertainment/TV Shows & Programs/TV Dramas
/Arts & Entertainment/TV Shows & Programs/TV Dramas/TV Soap Operas
/Arts & Entertainment/TV Shows & Programs/TV Family-Oriented Shows
/Arts & Entertainment/TV Shows & Programs/TV Reality Shows
/Arts & Entertainment/TV Shows & Programs/TV Sci-Fi & Fantasy Shows
/Arts & Entertainment/Visual Art & Design
/Arts & Entertainment/Visual Art & Design/Design
/Arts & Entertainment/Visual Art & Design/Painting
/Arts & Entertainment/Visual Art & Design/Photographic & Digital Arts
/Autos & Vehicles
/Autos & Vehicles/Cargo Trucks & Trailers
/Autos & Vehicles/Classic Vehicles
/Autos & Vehicles/Custom & Performance Vehicles
/Autos & Vehicles/Gas Prices & Vehicle Fueling
/Autos & Vehicles/Motor Vehicles (By Type)
/Autos & Vehicles/Motor Vehicles (By Type)/Autonomous Vehicles
/Autos & Vehicles/Motor Vehicles (By Type)/Convertibles
/Autos & Vehicles/Motor Vehicles (By Type)/Coupes
/Autos & Vehicles/Motor Vehicles (By Type)/Hatchbacks
/Autos & Vehicles/Motor Vehicles (By Type)/Hybrid & Alternative Vehicles
/Autos & Vehicles/Motor Vehicles (By Type)/Luxury Vehicles
/Autos & Vehicles/Motor Vehicles (By Type)/Microcars & Subcompacts
/Autos & Vehicles/Motor Vehicles (By Type)/Motorcycles
/Autos & Vehicles/Motor Vehicles (By Type)/Off-Road Vehicles
/Autos & Vehicles/Motor Vehicles (By Type)/Pickup Trucks
/Autos & Vehicles/Motor Vehicles (By Type)/Scooters & Mopeds
/Autos & Vehicles/Motor Vehicles (By Type)/Sedans
/Autos & Vehicles/Motor Vehicles (By Type)/Station Wagons
/Autos & Vehicles/Motor Vehicles (By Type)/SUVs & Crossovers
/Autos & Vehicles/Motor Vehicles (By Type)/SUVs & Crossovers/Crossovers
/Autos & Vehicles/Motor Vehicles (By Type)/Vans & Minivans
/Autos & Vehicles/Towing & Roadside Assistance
/Autos & Vehicles/Vehicle & Traffic Safety
/Autos & Vehicles/Vehicle Parts & Accessories
/Autos & Vehicles/Vehicle Repair & Maintenance
/Autos & Vehicles/Vehicle Shopping
/Autos & Vehicles/Vehicle Shopping/Used Vehicles
/Autos & Vehicles/Vehicle Shows
/Beauty & Fitness
/Beauty & Fitness/Body Art
/Beauty & Fitness/Face & Body Care
/Beauty & Fitness/Face & Body Care/Antiperspirants, Deodorants & Body Sprays
/Beauty & Fitness/Face & Body Care/Bath & Body Products
/Beauty & Fitness/Face & Body Care/Clean Beauty
/Beauty & Fitness/Face & Body Care/Make-Up & Cosmetics
/Beauty & Fitness/Face & Body Care/Nail Care Products
/Beauty & Fitness/Face & Body Care/Perfumes & Fragrances
/Beauty & Fitness/Face & Body Care/Razors & Shavers
/Beauty & Fitness/Fashion & Style
/Beauty & Fitness/Fitness
/Beauty & Fitness/Fitness/Bodybuilding
/Beauty & Fitness/Hair Care
/Books & Literature
/Books & Literature/Childrens Literature
/Books & Literature/Poetry
/Business & Industrial
/Business & Industrial/Advertising & Marketing
/Business & Industrial/Advertising & Marketing/Sales
/Business & Industrial/Agriculture & Forestry
/Business & Industrial/Agriculture & Forestry/Food Production
/Business & Industrial/Automotive Industry
/Business & Industrial/Aviation Industry
/Business & Industrial/Business Operations
/Business & Industrial/Business Operations/Flexible Work Arrangements
/Business & Industrial/Business Operations/Human Resources
/Business & Industrial/Commercial Lending
/Business & Industrial/Construction & Maintenance
/Business & Industrial/Construction & Maintenance/Civil Engineering
/Business & Industrial/Defense Industry
/Business & Industrial/Energy & Utilities
/Business & Industrial/Energy & Utilities/Water Supply & Treatment
/Business & Industrial/Hospitality Industry
/Business & Industrial/Manufacturing
/Business & Industrial/Metals & Mining
/Business & Industrial/Pharmaceuticals & Biotech
/Business & Industrial/Printing & Publishing
/Business & Industrial/Retail Trade
/Business & Industrial/Venture Capital
/Computers & Electronics
/Computers & Electronics/Antivirus & Malware
/Computers & Electronics/Computer Peripherals
/Computers & Electronics/Consumer Electronics
/Computers & Electronics/Consumer Electronics/Cameras & Camcorders
/Computers & Electronics/Consumer Electronics/Home Automation
/Computers & Electronics/Consumer Electronics/Home Theater Systems
/Computers & Electronics/Consumer Electronics/Wearable Technology
/Computers & Electronics/Desktop Computers
/Computers & Electronics/Laptops & Notebooks
/Computers & Electronics/Network Security
/Computers & Electronics/Networking
/Computers & Electronics/Networking/Distributed & Cloud Computing
/Computers & Electronics/Programming
/Computers & Electronics/Software
/Computers & Electronics/Software/Audio & Music Software
/Computers & Electronics/Software/Desktop Publishing
/Computers & Electronics/Software/Freeware & Shareware
/Computers & Electronics/Software/Graphics & Animation Software
/Computers & Electronics/Software/Operating Systems
/Computers & Electronics/Software/Photo Software
/Computers & Electronics/Software/Video Software
/Computers & Electronics/Software/Web Browsers
/Finance
/Finance/Accounting & Auditing
/Finance/Accounting & Auditing/Tax Preparation & Planning
/Finance/Credit Cards
/Finance/Financial Planning & Management
/Finance/Financial Planning & Management/Retirement & Pension
/Finance/Grants, Scholarships & Financial Aid
/Finance/Grants, Scholarships & Financial Aid/Study Grants & Scholarships
/Finance/Home Financing
/Finance/Insurance
/Finance/Insurance/Auto Insurance
/Finance/Insurance/Health Insurance
/Finance/Insurance/Home Insurance
/Finance/Insurance/Life Insurance
/Finance/Insurance/Travel Insurance
/Finance/Investing
/Finance/Investing/Commodities & Futures Trading
/Finance/Investing/Currencies & Foreign Exchange
/Finance/Investing/Hedge Funds
/Finance/Investing/Mutual Funds
/Finance/Investing/Stocks & Bonds
/Finance/Personal Loans
/Finance/Student Loans & College Financing
/Food & Drink
/Food & Drink/Cooking & Recipes
/Food & Drink/Cooking & Recipes/BBQ & Grilling
/Food & Drink/Cooking & Recipes/Cuisines
/Food & Drink/Cooking & Recipes/Cuisines/Vegetarian Cuisine
/Food & Drink/Cooking & Recipes/Cuisines/Vegetarian Cuisine/Vegan Cuisine
/Food & Drink/Cooking & Recipes/Healthy Eating
/Food & Drink/Food & Grocery Retailers
/Games
/Games/Billiards
/Games/Card Games
/Games/Computer & Video Games
/Games/Computer & Video Games/Action & Platform Games
/Games/Computer & Video Games/Adventure Games
/Games/Computer & Video Games/Casual Games
/Games/Computer & Video Games/Competitive Video Gaming
/Games/Computer & Video Games/Massively Multiplayer Games
/Games/Computer & Video Games/Music & Dance Games
/Games/Computer & Video Games/Simulation Games
/Games/Computer & Video Games/Sports Games
/Games/Computer & Video Games/Strategy Games
/Games/Drawing & Coloring
/Games/Roleplaying Games
/Games/Table Tennis
/Hobbies & Leisure
/Hobbies & Leisure/Anniversaries
/Hobbies & Leisure/Birthdays & Name Days
/Hobbies & Leisure/Diving & Underwater Activities
/Hobbies & Leisure/Fiber & Textile Arts
/Hobbies & Leisure/Outdoors
/Hobbies & Leisure/Outdoors/Fishing
/Hobbies & Leisure/Outdoors/Hunting & Shooting
/Hobbies & Leisure/Paintball
/Hobbies & Leisure/Radio Control & Modeling
/Hobbies & Leisure/Weddings
/Home & Garden
/Home & Garden/Gardening
/Home & Garden/Home & Interior Decor
/Home & Garden/Home Appliances
/Home & Garden/Home Improvement
/Home & Garden/Home Safety & Security
/Home & Garden/Household Supplies
/Home & Garden/Landscape Design
/Internet & Telecom
/Internet & Telecom/Email
/Internet & Telecom/ISPs
/Internet & Telecom/Phone Service Providers
/Internet & Telecom/Search Engines
/Internet & Telecom/Smart Phones
/Internet & Telecom/Teleconferencing
/Internet & Telecom/Text & Instant Messaging
/Internet & Telecom/Web Apps & Online Tools
/Internet & Telecom/Web Design & Development
/Internet & Telecom/Web Hosting
/Jobs & Education
/Jobs & Education/Education
/Jobs & Education/Education/Academic Conferences & Publications
/Jobs & Education/Education/Colleges & Universities
/Jobs & Education/Education/Distance Learning
/Jobs & Education/Education/Early Childhood Education
/Jobs & Education/Education/Early Childhood Education/Preschool
/Jobs & Education/Education/Homeschooling
/Jobs & Education/Education/Standardized & Admissions Tests
/Jobs & Education/Education/Vocational & Continuing Education
/Jobs & Education/Jobs
/Jobs & Education/Jobs/Career Resources & Planning
/Jobs & Education/Jobs/Job Listings
/Law & Government
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