Looking for a group to play Team Fortress 2 With

Hey,

I really like Team Fortress 2, the only think is I don't play with anyone I know. I was wondering if the game allows "clans"? Also, if so, or if not, I was looking for maybe 10 guys/girls that would want to play. I don't play every day, but it would be nice to have people to play with when I go on. Let me know, and we can exhange IDs.

-Thanks