I do not believe we can be the only ntelligent life in the universe. I believe we should continue looking but not necessarily send out beacons. The amount of data that is collected at SETI is unbelievable and my free computer time can be of benefit.
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.