1.
Yes. - Probably.
When/How - Hopefully on our computer - but our father says its unlikely.
Benefits/Dangers - We can learn from their experience.
2.
Yes.
Containing some clear universal signatures.
3.
Because it is exciting.
Great 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.