One thing that really annoys me is when you're playing a team game and your team is pretty good at successfully holding down a position and you win, and then you go to the lobby and the losing team starts bitching about how your team is a bunch of campers. To me, there's a BIG difference between being a player who can successfuly defend an area and being a camper. In my mind, camping is when you find a spot (high ground, dark doorway, warehouse rafters, etc.) and hunker down and just wait for people to run past so you can kill them.
On the other hand, if your team can successfully hold down one side of the map and win the game without a full on run-and-gun assault, then I don't see how that's camping. I mean, if I can stay on one side of the map and the other team just constantly comes at me with guns blazing and I'm raping them anyway, then I really don't see the need to go seek them out, know what I mean?