The lights are on
NOOBTUBER, CAMPER, LOSER, N00BSERS, $*#%HEAD, SONOFA$&#*$@ @*#$FACE *%$&@*$ NOOB!
These are some of the creative names that people will call you in Modern Warfare 2. And these don't mean a thing, so as you play, focus on the score at the end of the match, not what the hippocrits on the other team say about the person who just kicked their arse all the way to the next spawnpoint.
For starters, you need to find what you are good at, whether it's rushing with sub machine guns, sniping with sniper rifles, supporting with light machine guns, assaulting with assault rifles, or whatever you want.