Hacker News on 25 June 2011

• Hacker CS: The Khan Academy of Computer Science.
• Sam Altman will clean your house for $5
• OS X – Safe, yet horribly insecure
• Making a Ponyo boat
• LulzSec: 50 Days of Lulz statement
• Solar-Powered 3D Printer that Prints Glass from Sand
• AT&T's Rube Golbergian Web Form
• Skype mess: How far will this go?
• Why Nerds Succeed‎
• Telstra Fears LulzSec Attacks, Hesitates On Internet Filter