Hacker News on 29 March 2010

• My Duck Duck Go reddit ad by the numbers
• The greatest enemy of the programmer: hemorrhoids
• The war on WikiLeaks and why it matters
• Marketing Lessons from A/B Testing a Homeless Man's Sign
• Judge: Gene Patents Are Invalid
• Squaring two digit numbers in your head
• Ask HN: Interesting (Non software) books?
• Introducing "Aristo", A jQuery UI Theme/Experiment
• Don’t be a Grin Fucker
• Never trust a programmer who says he knows C++