At risk of appearing to be a troll...I have to say I hope they do ban all players who have hacked CoD4 - even if it's only for a few months.
I've been playing CoD4 for over a year and it is (imho) one of the best online experiences to be had...at least until a few days ago anyway when I started seeing other players flying..walking through walls...shooting from underground...in crates... etc etc.
Pretty funny the first time you see it (for maybe 30 seconds) and then it's just annoying. It's no exaggeration to say that it's destroying the CoD4 online community.
I honestly don't understand why anyone would bother hacking what is an almost perfect game. Are you really such a poor player that you need to cheat to do well? It's the most selfish and short-sighted tactic there is. Do you not realise that if everyone starts uses the hack the game becomes pointless?
Everyone has cheated at something...I would on occasion use cheat codes or whatever on PC/Console games if I was stuck on a certain level. But at the end of the day that's just me and my console. When you hack CoD4 you are ruining the game for real people. It may not feel that way as they aren't sat next to you in your living room, but you are.
A 3-4 month ban on the run up to Christmas - just in time to prevent them from playing Modern Warfare 2 online seems more than fair to me...give me time to get some practice in
/Rant