random-avatars.rb

require 'open-uri'
require 'set'
img_urls = Set.new
[0,20,40,60,80,100,120,140,160,180,200].each do |val|
  url = "http://images.google.com/images?as_st=y&hl=en&q=avatar+imagesize:150x150&sa=N&start=#{val}&ndsp=20"
  results = open(url)
  str = open(results).read
  str.scan(/http:\/\/([^\"]*)\.(gif|jpg|png)/).collect{ |m| "http://"+m.join('.') }.each do |item|
    img_urls << item
  end
end
puts img_urls.entries.inspect
puts img_urls.entries.size