Hacker News on 15 May 2008

• My experiment with smart drugs: Viagra for the brain?
• Scaling Facebook Chat to 70 Million Active Users Almost Overnight
• Richard Feynman and The Connection Machine
• Advice to the Bright and Young
• Adobe Introduces P2P Flash Player, Kills CDNs
• Teach yourself you to Hack in 6-9 months
• Dear Yahoo! You're Fired!
• The Gifted Adult: Self-Knowledge and Self-Esteem
• Safire - An iPhone Web Application Framework
• Ask YC: How do you achieve laser focus and concentration?