That's really cool! I think one way to make the experiment scalable is to add a social network overlay, where people can "follow" those other authors they're wa

That's really cool! I think one way to make the experiment scalable is to add a social network overlay, where people can "follow" those other authors they're watching, so they can build off their contributions. We've been using these ideas in the classroom as well: post an assignment where multiple solutions are possible, and let students build off each other's contributions (implemented as a Moodle plugin). I want to expand this into note-taking and wikis in MOOCs.