I am running SETI@home because I have read Carl Sagan's books about his view of the universe. To his memories I think donating a little of my PC-Power is the least I can do to honor such a great man.
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.