1. Because if it is just us... seems like an awful waste of space ;) Time to proove it! :>
2. I think it\\\\\\\\\\\\\\'s very good idea. I\\\\\\\\\\\\\\'m familiar with the frequency analysis concepts, so I\\\\\\\\\\\\\\'m convinced the scientist from SETI do the good job :)
3. I only wonder if the radio frequency band is enough... Maybe the band should be wider and the researchers should check the other ways of communication also.
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.