The Epic Legends of the Hierarchs: The Elemenstor Saga Wiki is a very interesting read. See if you can remember the old television show, epic novel cycle, or the trading card game. Of course, it is crimethink for anyone to suggest that any of those didn't actually exist and were instead figments of the imaginations of Penny Arcade (comic) readers. But, if it weren't real it would be a great example of emergent synthetic world design in Wiki form, which is something I've been positing about for a while.