Wikipedia being used in place of essays in Canada.
A small excerpt:
As an experiment, last January Beasley-Murray promised his students a rare A+ grade if they got their projects for his literature course, called "Murder, Madness and Mayhem," accepted as a Wikipedia Featured Article."
In May, three entries created by nine students in the course became the first student works to reach Wikipedia's top rank.
I think we need to see more of this of schools today. Integrating public technology and notification with school work is a great incentive for students to write well and make sure what they're doing is true. If the public will read your article, then you're not going to plagiarize, Are you?