Do you donate your spare CPU time? If so, to which service? Why did you choose that service?
→[More:]I was kind of scared off it a few years back when I was running SETI@Home on an admittedly poorly-cooled PC and it burned out my processor, but my new, ultrafast, well-ventilated computer is up a lot of the time doing absolutely nothing, and I'm considering putting that downtime to good use. I've heard of SETI and Folding@Home; are there others?