I'm making my way thru the Programming Collective Intelligence book but all of the code is Python. I'm reworking what I can into Ruby. I know there are others that have done the same but I wanted to start from a clean slate. Chapter 3 requirements: sudo gem install simple-rss RMagick If you are on Leopard, use this: http://onrails.org/articles/2007/11/03/installing-rmagick-on-leopard-without-macports-or-fink or http://pastie.org/282226 There is currently an error being generated when trying to create the 2d image. I'll be looking into that as time goes in. Chapter 4 requirements: sudo gem install nokogiri