I really like MP, but goddamn this fucking lag (360) makes me want to strangle someone. It turns the game from enjoyable to down right unplayable.
Examples:
Guy sprinting towards me, I'm already aiming down the sights with RPD+stopping power, pump him with full body shots for two full seconds (literally), guy stops sprint, aims and shoots at me, nearly kills me, I'm seeing red, yet I barely manage to kill him.
I notice guy on radar coming towards an opening on opposite side of wall, I set up ambush behind wall, shoot him with two shotgun blasts to the chest (with stopping power) as soon as I make visual, I somehow die and watch kill cam, apparently he comes through opening, makes a wide turn left turn, shoots, and I never got off a shot.
I see sniper in distance with my sniper scope, he sees me, we aim at each other quickly, I get off my shot aimed at his head, I hear the fucking shot go off, yet again, kill cam shows only his shot.
FUCK! I know this isn't specific to CoD4, but needless to say, it's extremely frustrating when playing with such a disadvantage. I'd be willing to pay more for dedicated servers. I think a game like this, where you can die so quickly from only a few shots, should require them. /rant