Madcow, I am not accepting nor denying it. But you don't know jack shit, you can't just say "WHY BIG FLASHY LIGHT?" it could easily be part of their technology they use, you also have no idea how they think either, perhaps they want people like you to think stuff like this.
We really have no idea though.
and spike, I am sure any form of life intelligent enough to space travel would be just as interested in extraterrestrial life as we are. But who knows, maybe they need a new planet... In that case, if they found us first, we are probably fucked.