1. I run it because SETI developed it and it has huge amount of data to analyze
2. Does it really need to be explained ?
3. More technical insights during computations and automatic sharing results on social networks (facebook, twitter, google+...)
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.