I don't watch this a lot, but I couldn't help notice this is called Big Brother 7. That implies that at some stage there have been 6 other series of this program in the past. Do you think that possibly, at some time over the years, some of the housemates may have caught some of it on the television, perhaps read about it and learnt that it is a game show of shorts, where the idea is to nominate out your competitors?
Half of these housemates seem to treat it as mass state funded therapy.
Whilst it can be fascinating to watch, it's hard to have any sympathy with anyone who puts themselves up for this freakshow. I for one say Nikki should stay until she learns how to behave in a group of human beings. There's been enough rewarding of antisocial behaviour in this series already, as evictees are lauded for bullying, bitching etc.