Do you think extraterrestrial life exists? For sure
Should humans transmit a beacon for others to find? No - Should be found by human space exploration.
Why do you run SETI@home?Primarly to see how hot me CPU would of Got, Secondly to do more units then a freind, thirdly seemed like a good idea at the time
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.