1. A Difficult question... I don't exactly believe that somewhere in the space could be huge alien population. But I believe that there must be somekind of lifeform!
2. Perhaps... But I can't say what would we send in a message.
3. Maybe I think that there is intelligence life... after all running SETI@Home is quite exciting!
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.