I think that some people take the BB game too seriously.
I believe, like Oldgit, that Jonny went intto the house to have some fun because he watched it on TV last year and looked like good fun to him. But, if he was playing the game, so what? Maybe he didnt want to cause tension in the house, maybe like some viewers he didnt like bitching and back stabbing in the house, he did actually say that in there.
Besides, some of the stuff previous housemates have said about Jonny, I say 'Go Jonny', they were so rude and nasty about him, its about time he put them in their place, people like Adele and Sandy who were constantly cruel for no decent reason.