I've been thinking alot about the history of online communities lately and I think part of that is twitter imploding on itself.
The thing that keeps getting me is I keep running into the same folks online over and over again. Maybe you lurked VG Cats and now we're friends because of Snouts. Maybe I followed you for furry reasons and found out you had a secret SA account. MAYBE you followed ME for my LP's but we became friends outside SA somehow (this has happened a BUNCH of times)