Hacker News on 4 May 2013

• Big-O Algorithm Complexity Cheat Sheet
• A determined 'hacker' decrypts RDS-TMC
• Experiment in paying villagers in India an unconditional basic income
• Predicting Google Product Shutdowns
• Help Kiera with her legal bills
• JSON API
• Today I saw the future
• A “simple” 3rd grade problem
• How to Be Startup CEO
• Are all telephone calls recorded and accessible to the US government?