I’ve been studying a few problems in the past with Xbox 360 and PS3. the biggest complaint noticed was the lack of matches or admittance thereof. This poses a big problem as individuals who have spent time, effort, and money on gaming systems and sophisticated hook ups are riding the pine when they cannot find or take part in a match. I do not feel a game tester 
If you do not know, multiplayer games allow players of video games access to play amongst each other online. There are multiple ways of doing so: e-mail, Lan parties, play-by-post gaming, or even play-by-internet. All in all the reality of actually fighting a real human opponent versus a computer, is priceless!
What could cause such problems where matches are always on the outs. Could it be network confusion, network overload, a conspiracy? I am not sure. You can peek in on many a forums in which gamers are constantly ranting about inconsistencies with their multiplayer games. Black Ops is due to release on Tuesday, November 9th. I can imagine the forums, chatlines, 1-800 support lines, e-mail, and any other means of communication will be jammed should the multiplayer function fail as this game should be a real favorite!