Yup, this is a serious thread. In the first few days alone, for a $38 application fee, you could be in with the chance of living on Mars, one of the four lucky chosen to be flown out there by 2023, as a part of "Mars One". It is, however, presumed that once you arrive, you probably won't be going back. Ever. The website is here.
From the looks of things though, they seem to be chosing the four people to go to Mars...by having a reality TV show with people phoning in too vote.