doesn't Gamers with Jobs have a TF2 server? I imagine they're a friendlier bunch than a lot of other places out there.
They're either extremely nice to play with or extremely xenophobic recluses depending on whether or not you get accepted into their inner circle. If you're not willing to post regularly in their TF2 thread and become one with their customs, traditions, and local cuisine, I'd maintain a safe distance from their server.