Do Online Games on Xbox Live die after New CoD/Halo Release?

I had trouble finding a good game on my friends 360 on Bad Company 2, he said Black Ops pretty much killed the online community.

Do the older online games just die out after the new CoD/Halo release every year?

BC2 was pretty much dead a month ago.

but the servers are always full since the new maps came out.

I find its a good thing. Theres a crowd of gamers (a large crowd) and they jump to the newest online game at release. What i generally find is the people that stay are really dedicated to the game, so i usually have good games. I only recently started to enjoy KZ2 online. You run into people you play with more often and its skilled players most of the time. Once that crowd leaves, i jump in. Ive found its true for many games.

Communities significantly reduce but i dont think ive seen one thats completely died. Ive always been able to find a game.

nope not entirely still a fairly decent halo 3 community on the go (was on it last week when i had a shot of it cause i snagged it for a fiver).

no not really, theres still a few thousand people on Cod w@w's servers

not sure what your're on about, i easily find full games on BFBC2 everytime i play