I saw SETI@home a number of years ago (before BOINC) on a website. I thought it was a most interesting experiment and gladly took part in it. I have now rediscovered SETI@home and love to contribute everything I can to it and also Rosetta.
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.