Bob has an interesting view of different Web 2.0 communication modalities and the differing personalities that go with them.
I’m not going to add anything to his views, it’s an interesting area that the cultural anthropologists amongst us could have some fun with.
Ben, here is a document for Web 3.0, Embracing “Web 3.0”. As I have said in some of my posts here in the past, that Semantic Web (SW) is starting to make impact now, commercial implementations plus the SW standards (under W3C) is making huge progress. So, SW could be label as Web 3.0 according to the authors of the paper, but SW has been around for around 10 years. It is an excellent technology.