The Web 2.0 meme is proving immensely difficult to define. So far, Richard Macmanus seems to have come the closest to a succinct answer with his Web 2.0 Elevator Pitch. Meanwhile, we've seen Dion Hinchcliffe and Tim O'Reilly come up with some comprehensive, if complex, visualizations of the Web 2.0 world. But if you're craving a bit more simplicity, take a look at this excellent diagram by Barb Dybwad, which seems to capture the essence of the meme. Thanks, Barb!
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