I'm beginning to wonder if casting these losers is part of CBS' ratings strategy. Correct me if I'm wrong, but I don't remember CBS ever releasing the names, photos, etc, of the castaways 2+ weeks early. Now add in the controversy regarding Christa, Ryan, Ryan, and Jon and you have a heck of a lot of buzz going on. CBS is getting 2 weeks of "free" publicity and media hype, and I bet more people than ever will tune in to the premiere because of it. Maybe they had complete knowledge of the backgrounds of these folks. Surely they have the skill and resources to uncover these stories themselves. It is hard to believe they'd actually want a possible neo-nazi on board, though.
The other possibility is that CBS and MB are either incredibly stupid or incredibly lucky.