Call of Duty 4 (PS3) cheats?

Are there any cheats for Call of Duty 4, on the PS3, multiplayer online? I have searched some but have found none. I don't like to use cheats usually, but I have seen some weird things that interest me. I have seen a player climb into the cratings, on the wall, underground near the tunnel entrance where flag (c) would be during Domination (map: Pipeline). I have seen a player climb on top of a tank to the very top of the missiles (map: Countdown). I was just wondering if this is already possible in the game, or are these players using cheats?

Call of Duty 4 (PS3) cheats?
Some of those people are using glitches and hacks. If those people are caught they will get their user banned from Call of Duty 4 and there is a possibility of getting their PSN IP banned too (for serious offenses). I suggest to avoid cheating online.
Reply:this?


http://www.cheatcc.com/ps3/callofduty4mo...
Reply:There are some glitches in the game where you can get to places where your not supposed to, but I'm not aware of any "cheats"
Reply:You need to find all enemy intelligence ( they are latops spead throughout the game) to get cheats