Joey,
CBS never had any intention of continuing the show into a second season. They were trying to do something like a scripted Survivor where they would do another season with a totally different cast in a different location with a totally different mystery.
The initial ratings weren't that great, but it's getting a nice reception in terms of internet activity. So, who knows? Maybe CBS can
Work Out a few kinks, and it could be a nice summer companion with BB?