1.
There is no doubt that extraterrestrial life exists. Why are we unique in such a huge universe?
I don't know if we will discover ET's before we annihilate ourselves.
What I think about the dangers of discovering ET life: Have you ever killed a fly? If we were all flies to them?
The benefits of contact with ET's: an utopy like Star Fleet from Star Trek.
2.
I think we should really transmit a beacon, despite the danger.
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.
