How To Write A Simple Web Crawler In Ruby
http://www.skorks.com/2009/07/how-to-write-a-web-crawler-in-ruby/Write an Internet search engine with 200 lines of Ruby code
http://blog.saush.com/2009/03/17/write-an-internet-search-engine-with-200-lines-of-ruby-code/
http://www.rubyinside.com/building-a-search-engine-in-200ish-lines-of-ruby-1655.html
