On a related question—
Audience member: What's your name?
My name is George Chriss, User:GChriss, of The Pennsylvania State University. Some of the librarians and course designers there are talking very seriously about assigning editing Wikipedia for a course grade in courses that have several hundred students each. My first question is: is that a good thing and how do we handle that? How do we suggest metrics for them to grade on (like working with longstanding editors)?