Dan Proctor, the mind behind Labyrinth Lord and Mutant Future, has created a publishing group on Lulu.com -- the Old-School Renaissance Publishing Group -- that brings several retro-clone publishers under a single virtual "roof." At the moment, the group includes Dan's own Goblinoid Games, Matt Finch's Mythmere Games, John Adams's Brave Halfling Publishing, and Fight On! magazine.
My hat's off to Dan for getting this moving. This is a terrific idea and it's something I hope more old school publishers get behind it and work together to raise the visibility of all their products.