It's something we were going to do but then we invented the General Gaming forum, then eventually it was still something we were going to do, but then we found out about Half-Life: Source.
Eventually we'll just have all Half-Life discussion going on in there.
But still, it could still be a good idea to have somewhere to discuss mods and stuff.
I was just thinking about this.. It becomes quite a dilemma for some people since they either post in the Half-Life 2 discussion, General Gaming or Half-Life: Source forum, and most of the threads aren't moved anywhere.