Hacker News on 29 June 2009

• StackExchange- The Stack Overflow Knowledge Exchange Platform
• Welcome to Your Quarter Life Crisis
• Laboratory tests of vegan restaurants in LA find some aren't
• Keeping News of Kidnapping Off Wikipedia
• Malcolm Gladwell: Is free the future?
• The story of Mel (1983)
• You may use your class notes and Feynman
• The End of Retirement
• Sacrifice your health for your startup
• Start Implementing HTML5 Today