I am of the belief that there is likely life elsewhere in this universe, but I am doubtful we will ever meet them in person. Space is far too vast and our ability to traverse it far too limited. I think looking for a 'signal' is the best chance we have of over knowing whether or not we're alone.
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.