1. Yes, i do believe extraterrestrial life exists. How the humans will discover it? maybe through the Seti work?=)
2. Sure we should transmit a beacon .. ;) I think we should send something that stands for peace and love =)
3. I run SETI@home because I'm interessted in ET's ;) Good project =)
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.