Hacker News on 16 September 2010

• Diaspora Developer Release
• The Very Last Thing I’ll Write About Twitter
• Groupon’s Success Disaster
• Wordpress Themes for Launching your Minimum Viable Product
• You Negotiate Commodities, But You Seize Opportunities
• Why We Shut Newstilt Down
• Groupon in Retrospect
• Usability Tips Based on Research Studies
• Understanding Bash History
• Google's new data center in Finland