Apparently Clay Shirky mentioned "The Lessons of Lucasfilm Habitat," a paper about the MMOG mentioned in Howard Rheingold's The Virtual Community, in his ETCON talk about whatever it was he talked about at ETCON. I took a lot from it (and related papers on Habitat) when I was wikiing the social-MUD system I wanted to write a while back. Since Smart Mobs revived the idea of doing my own , this time more oriented around distributed/P2P architecture, I should maybe revive the wiki...
But there's plenty to do and little to do it with, since I should be looking for one of those job things. They still exist, right?
And anyway, I'm still running with Fuzzball MUCK so far. Fuzzball 6.0 is about to hit final, but it's going to be called 6.01 because "6.00" would sort lexicographically before "6.0rcN", which is the current version number. IIRC Revar, the Fuzzball autarch, was actually there (insofar as there was a there there) for Lucasfilm Habitat. I haven't inquired about it much, but perhaps I ought.
I should also look at Twisted Reality. You probably think I just copy Mark Pilgrim a lot, don't you?