It strikes me as almost appropriate that students who are required to edit a Wikipedia entry as part of a class, ended up vandalizing pages. I think you could argue that it is a valid response to being forced into public participation, particularly in the context of a self-organising community where all the other participants are self selected. If you'd not edited Wikipedia before, wouldn't boundaries be the first thing you'd want to test? What would Cartman do? I assure you he's not going to try the sandbox first. I think a lot of students would also 'get' that in addition to being a knowledge resource, wikipedia is also a kind of game, something former Wikipedia editor Brion Vibber pointed out in Nicholson Baker's NY Review of Books article, The Charms of Wikipedia. While there are clearly good pedagogical uses of Wikipedia, required editing makes me uneasy. It's not so great for students to have to learn in public and not so great for the people participating to have a group of students descend upon them either. --Margie Borschke