Letting the community ban the trolls
Every time a new apple product is released it is the same. Those who do not like Apple and their premiums go on and on about what a waste of money it is, and those who like Apple products will defend their corner. The other way around, the same thing. In the end, the thread ends up being a willy waving competition, which is really not what the deals threads are about, right?
Why not implement a '+1' and '-1' on the users, where other users can mark a user up or down, and if a user falls below a level, they get suspended automatically? So if 100 users don't like someone posting a message (because they think it is trolling), the user gets suspended, and the post deleted/hidden.