Hacker News on 21 October 2009

• How We Made GitHub Fast: A detailed look at GitHub's new architecture
• Guido's Proposal: Moratorium on Python language changes
• 37signals Launches Haystack for Web Designers and Clients To Find Each Other
• Unladen Swallow 2009Q3 Released with LLVM optimized Python
• Starting a business isn't as crazy and risky as they say
• Turn Your Entire Office Into a Whiteboard
• 100,000 Users And So Can You (A history of Carbonmade)
• A CS Research Topic Generator or How To pick A Worthy Topic In 10 Seconds
• Papers in Computer Science: summary and discussion of important papers
• RT @google: Tweets and updates and search, oh my