do they communicate with each other...as in if i were to buy call of duty 4 on ps3 (i like the ps3 graphics better, and online is free) would i play with everyone with cod4, those playing on xbl and psn, or just the people who own the ps3 version playing on psn?
Yup but, its soo annoying when they put you in a middle of a losing game in halo 3 and cod4 so that affects my loss ratio even though i didnt get to play in the game, at least PsN lets you start a game from the beginning and its not slow its just right.
I haven't had a problem with matchmaking or the number of ppl in a room on the PSN for COD4 yet though some people who host large matches clearly shouldn't be allowed to with their connection ^.^' @Omrisama, must we go though this again, seriously.