Hacker News on 6 November 2011

• Don't use MongoDB
• Missing Person - Tracy Williams, Technorati Employee
• Programmers' salaries at Google $250k (and up)
• Teachers write their own online textbook, save district $175,000
• You're a developer, so why do you work for someone else?
• AI are taking jobs
• What being hopelessly single taught me about pitching tech celebs
• Why the cheapest maple syrup is the best
• Ask HN: Startup promised me a job, then backed out after the internship
• 1TB Hard Drive Prices up 180% in a Month