I live in New Zealand. (I'll expand on this later)
Thoughts about SETI and SETI@home
1) 95% sure that E.T. life exists. Probably discover them through SETI@home or similar (ie, we'll detect signals from them) Possible dangers? To them or us?
2) Yes. Transmit 'The Sound of Music' ad nauseum. If they still come and visit, we'll know they're a tolerant species.
3) To justify the expense of these pieces of junk that we buy. SETI@home is an excellent 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.