The Lessons of Lucasfilm's Habitat (1990)
web.stanford.edu
web.stanford.edu
* Part 1: http://www.raphkoster.com/2006/06/03/uos-resource-system/
* Part 2: http://www.raphkoster.com/2006/06/04/uos-resource-system-par...
* Part 3: http://www.raphkoster.com/2006/06/05/uos-resource-system-par...
The MUD I was on had GM led quests and stories and adventures for every single new region that opened as well. So the huge problem they ran into of an event only working for one user just sounds like some thing they blew out of proportion to write what they wanted to write, or they were just ignorant of what everyone else was doing at the time.
Prime Intellect: very NSFW sci-fi you can read online at http://localroger.com/prime-intellect/