Skolos also runs a mod_virgule, as do a number of other sites. neale and crackmonkey in particular have been putting a lot of work back into the m/ codebase. I plan to fold Neale's patches back into the mainline tree. The possibility of mod_virgule picking up development pace is exciting.
One particularly appealing change is the ability to post comments in projects (used for evil plans in Badvogato, among other places). This is clearly useful, but I'm also intrigued by the idea of setting up "rooms" or topic areas, not linked to any particular project. I can easily imagine rooms for sex, politics, movies, books, etc. Or, perhaps the organization should be a little less directory-like and more fluid, with rooms coming with the whim of a poster, and going as the result of inactivity.
Is this something people would find useful? With crackmonkey's patch in hand, it really shouldn't be that difficult to deploy.