At Kalamazoo last year, I heard a discussion of a project that was planning to use an virtual commons--i.e. a place where users could contribute to the development of the project through shared annotation, textual development, and the like (I think they actually described it as a piazza. As I understood the idea, and in discussion at the Digital Medievalist business meeting a couple of people mentioned similar proposal, the idea was to build what we might now think of as adding wiki-like capabilities to a larger, unified, scholarly project.
Does anybody know of any scholarly projects that have actually implemented such virtual piazza-type interaction? I'm interested in projects that allows arbitrary users to contribute to the content, either with or without refereeing.
-d