Windows Live?

Does Windows Live ban people. If so how often and how do they find out if you are cheating/hacking/bad gameplay? Also is there a way to get out of a ban after being banned? Sorry guys for the questions but this is important as many games are turning to Windows Live. I have read a blog from Windows Live informing bans. They didn't really give clear information how there banning system seems like in that blog is that the ban issue is based of complaints from other players/members of Windows Live. But my question is, is this really just based of from players complaining/reporting you? If you know something i don't know about Windows Live banning please post. If you have any ideas on how they do it you are welcome to share them here. Also if you hack on any Window Live based game please tell us and tell us if you have encountered a ban or not. THANKS!

Here is the Windows Live Support Documents about bans - Games for Windows - LIVE : Support Documents