Hacker News on 13 November 2011

• Diaspora Co-Founder Ilya Zhitomirskiy Passes Away At 21
• List of freely available programming books
• Oppenheimer's recommendation letter for Richard Feynman
• Neil deGrasse Tyson AMA
• Generation Sell
• PragDave: I'm on vacation, and I've deleted your message—really
• Think different about Jobs
• Translating mathematics into code
• How Google Inflates AdWords Bids
• "No matter what price we choose, we always make the same revenue"