Map of Online Communitites

Via Jesse – Map of online communities. I wonder if it’s missing an important Balkanized zones of all the institutional silos for Universities, company intranets, etc. Getting back into the whole identity track — how do you go about breaking down all the silos. OpenID seems like it could be part of it, building bridges across communities, kind of passport identity style. Seems like then you’ll have a few “identity superpowers” though and lots of little vassal states. It’d be an open environment, but not sure what the dynamic is. Maybe OpenID gets used by the DMV, and getting a drivers license also gets you an online, vetted id?