Hacker News on 19 February 2012

• Online Python Tutor
• Our unrealistic views of death, through a doctor’s eyes
• How Forbes Stole a New York Times Article and Got All The Traffic
• How key-based cache expiration works
• Hackathons are nonsense
• The Great Web Framework Shootout – On GitHub
• Parsing Techniques - A Practical Guide
• How to Make and Use a Transparency Grenade
• Berkeley Computer Vision Class
• The town is no longer friendly for business