I don't know if life exists. I don't think we should randomly transmit beacons. It just adds yet more EM clutter I run SETI because I have spare cpu cycles and somebody wants them.
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.