It's because of the stupid vandal attacks. Swert had to disable account creation to get them to stop. You can try PMing him, but I don't know what he can do. :/
Well neither do I. I just want clean air to breathe so I don't suffocate, clean water so I don't get poisoned, and plants and animals left on this planet so we don't starve.
Mars isn't the most hospitable place, y'know.