I remember the story of elephant I heard in my childhood. The story is about how four blind people accedently bump upon an elephant and then describe it in their own way as they touch different body parts of the elephant. Actually, they all were talking about the same object!

In my opinion, same if the story of Web 2.0. We all are talking differently, but essentially the same thing! To me, Web 2.0 is nothing like a rocket-science. It is simply a very intuitive, fast and customizable user interface, intertwined with high performance (yet easy to use) software tools.