Item #7

I really like the spacehack website, and particularly the Global Telescope Network application which allows people at home to use their computers to process telescope images when they're not using their computers. There have been several use-your-own processor-while-you-sleep-to-turn-your-home-computer-into-a-giant-parallel-processor programs, notably SETI, but this one is actually really cool and doesn't suck a lot of time or memory. I love that home computers can be part of a larger science project or scientific community.