Believe that extraterrestrial life must exist. But that does not mean that any ETs that are near enough to be detected are capable of producing signals loud enough or at all for us to detect. I would expect that tool making ETs are rare in our neck of the woods but we should still look.
As an amateur radio operator with a degree in Physics, I have the know how to set up my own radio telescope. But I live in an apartment. This is the best way I can help with SETI.
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.