no
No. None of the Modern Warfare series have been 2 player online (aka. online split screen).
yea if you are playng in two player mode or xbox live. Does that help?
Yes, online and offline.
Two players on one screen. Ten players online.
yes in local games and spec ops not online
Go to the main menu and select Multiplayer... Then Play Online...
on split screen, no, on live, yes
Im not sure why it corrupts. Im sure your talking about your split screen accounts. I had very high level ones, and they went corrupt. DO NOT DELETE THEM IF THEY GO CORRUPT. When you get online, the magically work again. Idk why or how but that's what worked for me
yes
you cant
Unless that's all you play and you don't play online, then sure. Go for it.
It does worki have a ps3 with modern warefare 2 and the split screen and the online multiplayer work finemaybe your ps3 is not connected to the internet?