Why do I run SETI@home? Dont really know. I guess its cool to have that icon there, but maybe because thats a "good" way to spend my CPU-resources. And its kinda cool to see how many results you get done and compare it to others and... well, I dont know!
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.