Hacker News on 7 April 2011

• Using prime numbers to make better backgrounds
• Facebook open sources its servers and data centers
• Chinese Infinite Magical Hard-Drive
• Before I Die...
• Physics Engines for Dummies
• If you applied to YC this cycle, please put your email address in your profile
• Introducing Pow, a zero-configuration Rack server for Mac OS X
• Anonymous goes after Sony, makes it personal... very personal
• Life beyond HTTP 1.1: Google’s SPDY
• C Craft: C is the desert island language.