Host your own dilbert feed (image only) 1. slap this gist in a crontab 2. host the feed.xml file It's probably not legal to do this, so don't. I just wanted to make a point.

dilbert_rss_update.rb

require 'nokogiri'
require 'open-uri'

def get_image_url()
    # Find the url for today's dilbert comic on the home page
    doc = Nokogiri::HTML(open("http://www.dilbert.com/"))
    doc.css('div.STR_Image img').attr('src')
end

def update_feed(image_url)
    if !File.exists? 'feed.xml'
        File.open('feed.xml', 'w') do |f|
        f.write(<<eos
<?xml version="1.0" encoding="UTF-8"?>
<rss xmlns:atom="http://www.w3.org/2005/Atom">
  <channel>
    <title>Dilbert Daily Strip</title>
    <link>http://dilbert.com</link>
  </channel>
</rss>
eos
)
        end
    end

    # Open the feed
    feed = Nokogiri::XML(File.open("feed.xml"))
    channel = feed.root.children.first

    # Check if this is a new entry
    if feed.xpath('//item/link').map{|e|e.text}.include? image_url.text
        puts "Not a new comic: ", image_url
        return
    end

    # Add the new entry
    add_item(image_url, feed)

    # Keep only the last 10 entries - a bit clumsy
    feed.search("//item")[0..-11].each{|n|n.remove}

    # Save the feed
    File.open('feed.xml','w') {|f| feed.write_xml_to f, :indent => 4}
end

def add_item(image_url, feed)
    today = Time.now.strftime('%Y %d %d')
    builder = Nokogiri::XML::Builder.with feed.at('channel') do |xml|
        xml.item {
            xml.title "Comic for "+today
            xml.link image_url
            xml.description "<img src=\""+image_url+"\"/>"
            xml.pubDate today
            xml.guid(:isPermaLink => "false") {
              xml.text image_url
            }
        }
    end
end

update_feed get_image_url()