Just donating spare cycles for the betterment of humanity...
Thoughts about SETI and SETI@home
SETI@home is awesome. The idea of SETI itself is great, and forming one of the largest supercomputing networks in the world with little effort on the part of the @home users is a great idea. Why spend idle CPU time rendering a screen saver when you can scan the universe for intelligent life?
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.