no
Yes, you can. You can play the campaign offline and against friends in split-screen mode.
Yes
yes.
yes
Yes, online and offline.
No, you can do offline solo/split screen or online with three other players.
Yes, on split screen, with four players.
No, you may not use custom classes in offline spilt-screen.
Yes, it has up to 4 player splitscreen offline, and 2 player splitscreen online.
Call of the Dead is not even available for the PS3 until the June 3 2011 release of the Black Ops Escalation map pack which includes the zombie map Call of the Dead. It is not free and will cost $15 for Escalation
co-op campaign is in co-op. Split screen in multiplayer if you want to fight each other!
Well, you can only do it on offline split-screen. you go to select profile, press triangle on the profile you wanna delete, press yes, and there you go!