Apparently, I'm not the only one who's rapt with Wikipedia. I just discovered Jim Brown's excellent blog, Clinamen, which I've added to my blog roll. I don't know Jim personally, but what I do know is that he's a graduate student in Rhetoric and New Media Studies at the University of Texas - Austin. Clinamen is his attempt to work publicly through issues he's addressing in his dissertation, which focuses on Wikipedia. I haven't been following his blog long enough to know exactly what he's up to, but as far as I can tell, it's all about history, agency, collective writing practices, and the politics of knowledge production. Now that sounds like a dissertation to me.
Anyway, be sure to check out Clinamen. It's really interesting stuff.
P.S. For all you Deleuzians out there who are trying to put a finger on the word "clinamen," GD mentions it in his writings on Lucretius in Difference and Repetition, The Logic of Sense, and elsewhere. In a nutshell, it refers to the swerving of atomic particles--an apt metaphor for Wikipedia indeed!