1) Because it is the only way to make something with all the human beings that do not destroy to us.
2) It has exceeded the expectations. It is one great idea.
3) Perhaps I am not informed but what is happened to the canditates? If is possible to clear this point. It is beautiful to know that your job produces something.
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.