Hey, I'm Dan Brown, I live in New Jersey, and I'm a space fanatic. Well, maybe not fanatic, but I think way too much about it, among other things. If I could go into space, I'd probably do some somersaults right off the bat.
Thoughts about SETI and SETI@home
Well of course life exists on other planets, and if we ever do find it, it will hopefully be in person when we finally screw up the courage to leave our little solar system for other stars nearby. If there is such a discovery, it will probably be near by (Europa....) and will aid in our understanding of life and evolution on other worlds. The only downside would be our reactions to the life. If they are at the stage where they are tribal or something of the like, then we may exploit them, if they are more advanced than we are, they could either teach us, or they could view the invasion of their planet as a threat and try to wipe us out.
Transmitting a beacon for others to find if not just hear on their planet would at least convince them that they are not alone. If ET's are trying that approach with us, I hope SETI will pick up the siganl sooner or later. Of course if they pick up a signal coming from another planet, we can safely assume that they are now more advanced than we are (at the rate sound travels, we might be getting a visit from them soon...) and it might inspire us to get started on a project to colonize Mars and the Moon as way stations to get to Europa where we can gather water to fuel our ships to later leave the solar system on a journey to the nearest star, in order to see if we can find life there. I run SETI on the off chance that I might find an irregular signal that doesn't come from Earth.