It depends on the game. Different games have different rules.
Yes, there are many people who play FEAR 3 online on Xbox 360.
4 at max
The xbox 360 is made for to play with other people online
No, players playing online on a computer version of a game cannot play with players online on the Xbox 360 version of the game.
no. if you want to play for free online - get a ps3.
on the xbox 360 1 player can play campaign at a time. And online four people;but you defeat waves of ghost or do jobs and stuff like that
no
i dont think many people play halo 2 pc, but alot of people play halo 2 xbox with xbox live!
You can't as you need gold to interact with other people online
yes
No because they are both different formats
Not manny