Im 13 years old, and love to participate in the search for extra-terrestrial life. I have been using BOINC and SETI@Home for a year or so, and then bought a new computer to help!
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.