Actually quite a few people communicate in it. I don't have a mic though, and most PS3 online gamers are dicks so I just hit the "Mute All" button. XD
People view a thread to see if the substance interests them. Most of the time they aren't going to post. Anyways, I've only played COD off that list, so I can't really cast an adequate vote.
Battlefield and MAG. If you're playing with friends Battlefield and MAG are a lot better than MW2. Online for MW2 is lone wolf and a lot worse than CoD4 in many respects. Woops, I voted for CoDMW2 on accident.
i would recommend cod modern warfare. battlefield is full of noobs and hackers Mag is really laggy (for me it is anyway...) modern warfare ... does have noobs like campers but it is fun