Hacker News on 26 February 2007

• What the Web's most popular sites are running on
• Paul Kedrosky: The Best Book for Startups
• If you are going to launch a startup, how many friends would you need?
• Tim O'Reilly: Gift Economy or Honeymoon?
• Idea: A Better Social News Site
• Venturevoice - podcasts of leading entrepreneurs such as Reid Hoffman, Evan Williams, Fabrice Grinda
• How OkCupid prevents break-ins despite buggy code
• Do You Need to Write a Business Plan?
• An Ad Upstart Forces Google to Open Up a Little
• An OpenID is not an account!