I think SETI@home is a great idea and I will be disapointed if it ever stops. Distributed computer, which was pioneered by this program holds great potential for low budget programs that need a great amount of processing power.
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.