Hacker News on 29 September 2009

• Teaching Linear Algebra
• How Tim Schafer Broke Into the Game Industry: A Legendary Cover Letter
• How Races and Religions Match in Online Dating
• The Dropbox iPhone App is Out
• The Most Important Writing Lesson I Ever Learned
• What to do when an $8 million gorilla launches 3 weeks before you
• Palm apologizes to JWZ
• If Craigslist cost $1
• 1984 ad remade..new Dictator: Steve Jobs
• You're our customer. We Hate You