Good point about user-generated content, and I'd say that this still fits under content aggregators because the content sharing is usually topic-specific and dr

Good point about user-generated content, and I'd say that this still fits under content aggregators because the content sharing is usually topic-specific and driven by information. The exception to this rule are things like Facebook and Twitter where there is peer-to-peer communication only. It's true that Web 2.0 as a buzzword can get tiring, but can we agree that there is a shift to conversational media vs. one-way media? There has to be some name to identify that shift, and Web 2.0 seems to be the word of choice for now.