Heh.. it's more like they needed Ms. Anderson to raise something else, which'll in turn boost ratings.. It doesn't surprise me really.. it was a deal that was lucrative for both.
She probably needed to hang on to her fame, and possibly wantd to be known for something other than her on again off again relationships, her tits, and well, being the train wreck that she, and her life seems to be.
And they needed someone to get attention, and bring in revenue.
The only thing that I know about Big Brother, is that on occasion the housemates f--k each other.. not all that interesting imo..