No u can't
YES!!!!!!
yes connect another controller to the game and play hope this helps :)
Call of Duty Black Ops is four player split-screen, and 2 can play split-screen online.
yes
no
unfortunately it doesnt The PS3 and Xbox 360 do have online split screen
No you can't but you can in COD4 and CODW@W
yes you can
no
no
The only way that you will be to join with another person will be in split-screen, co-op or multiplayer, but you cannot join split-screen online with two people.
Call of Duty: Modern Warfare 3 for Wii doesn't have split screen because the Wii doesn't have enough RAM to handle split screen.