Hacker News on 24 June 2009

• Face detection in pure PHP (without OpenCV)
• Ask HN: Math for hackers.
• Website Performance Tutorials
• Erik Naggum, R.I.P.
• HTC Hero - Full Flash, Skype over 3G, custom Android UI, multitouch.
• Startup Law 101 - What it means to own x% of a company
• Posterous Acquires Fellow Y Combinator Alum Slinkset
• Encrypt-then-MAC
• The Billion Dollar HTML Tag
• Outlook’s broken—Let’s fix it