GarageGames, the creators of the Torque game engine, have launched a gaming social network community, targeted both for gamers and developers. It contains forums, groups, an increasing game list and showcasing of new games (if you're a developer you can promote your own games).
Seems interesting, so I've registered. Actually almost all the "hot" is on the forums, but the game list is growing quite fast (nearing 3,000 right now).
I've registered into it, so if someone else does, feel free to add me as a friend ;)