Hacker News on 7 February 2010

• AmEx: "We discourage the use of special characters because..."
• How to become rich even if nobody is following you on Twitter
• Official reasons why Adobe doesn't open-source Flash
• The Building Blocks of Ruby
• Ask HN: Steady 4-5% on $5 million?
• Window that morphs into a balcony
• Adobe's response to Flash Crash
• What My User Survey Taught Me
• Python Machine Learning Code Repository
• Paul English of Kayak on Hiring, Venture Capital, Time Management, NDA's, etc.