Ventrillo allows you to see that as well.
As to Joint Ops and how good it is..
I would say it is no better then an average game. BUT, it is an average game that has co-op play in it. If you are big into co-op like many of us are that makes it a must buy game.
If they release a mission / map builder then it should get even better. If they make the AI have any I at all it should be even better still