1. a. Yes
b. By Accident
c. unknown but likely to be catastrophic
2. a. We already are
b. Sorry, they can see us warts and all.
3. a. It's a neat screen saver and a very useful project.
b. This is a marvellous application of distributed processing.
c. Advertise potentially interesting signals though a banner on the display.
It would be nice to see that some progress is being made.
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.