Hacker News on 17 January 2010

• Need to refresh your math skills? From basic algebra to calculus and beyond.
• Startup Equity For Employees
• OpenBTS: Cheap, open source cellular network
• Why I love having tabs in source code.
• Google Agrees to Censor Encyclopedia Dramatica Entry in Australia
• Why I prefer no tabs in source code
• Presentation on the new Python GIL
• WebNumbr: graph any number on the web
• Top Programming Fonts
• Concerning Git's Packing Heuristics