Hacker News on 4 February 2009

• Don't use css or table layout, use Sass and Compass instead
• Half a second delay caused a 20% drop in traffic
• Dear HN, I'm worried about us
• "Joel Spolksy is wrong about my work" - Kent Beck
• Ask HN: Emacs users on OS X, what's your setup?
• Damian Katz - Why he decided to create couchDB
• Mathematica home edition, finally. $300.
• Posterous (YC S08) launches universal bookmarklet
• Bill Gates unleashes mosquitoes on TED conference
• How Depressions Work