They make a good case,  http://gizmodo.com/5537502/diaspora-the-student+made-privacy+respecting-facebook-alternative  , trying to replace facebook using a distributed network of sites. Of course, others have rightly stated that really, the web is already a social network. There's tons of sites for doing individual pieces of what facebook needs. The main problem I see with that vision is that it doesn't seem like we have unified privacy and access controls across sites. I can publish...