1. I guess it's a desire to help with something that is greater than myself.
2. I think that this is a great idea, and I wish I had stumbled upon it sooner.
3. Maybe an app that lets us see the progess on the subjects we are helping out. :)
SETI@home and Astropulse are funded by grants from the National Science Foundation, NASA, and donations from SETI@home volunteers. AstroPulse is funded in part by the NSF through grant AST-0307956.