We have the pseudo-official one. We have the L4D(2) one. We have the TF2 one. We probably have more that I never noticed.
Now? Now we have the generic one.
I just created http://steamcommunity.com/groups/gogGeneric to minimize the need to get a new group for every multiplayer game on Steam.
As it stands, "normal" users can't create events on the other groups. Makes sense for the pseudo-official one, the TF2 one (since the events are on a server), not so much for the L4D(2) one (whatever :p).
With this one, all users can create events. So if you want to try and find some random people to go pub some BC2 or are looking for people who want to try and get Borderlands MP to work, just make an event.
Not 100% certain how this thing works, but I think it is set up so that everyone can invite whoever the hell they want. If people start abusing the event system, they get kicked out. Plain and simple.
So if you want in, post your Steam name in this thread and someone will invite you.

I like specific game groups. None of the whole I WANNA PLAY GAME X or NO I WANNA PLAY GAME Y stuff, like how Shacknews does it (which is where I got the idea from, they've got a game group for pretty much every game, from Borderlands to TF2 to L4D to BC2 to Starcraft to Counter Strike).
But alright, hook me up. You've got me on Steam, I'm Meathamper and I look like Sean Connery.

meh, you can add me if ya want, same username on steam as here

I don't have any multiplayer game on steam yet (in fact, I only have Torchlight, though the original reason I made the steam account was that I wanted to play HL1 again), but you can add me anyway. If I understand how this steamy thingy works with nicknames, I'm daydr.

I am honorbuddy.

Yes, you are.

Meathamper? What, did you change it again? Last time I looked, you were still the Explosionologist

I am a man of a thousand faces. I mean, a thousand Internet personas

And a man of a thousand insinuations?
As far as the group goes, hook me up - same alias as this post.