I've just penned an article on Web 3.0 from a librarian's standpoint. In my article, What is Web 3.0? The Next Generation Web: Search Context for Online Information, I lay out what I believe are the essential ingredients of Web 3.0. (Note I don't believe the SemWeb and Web 3.0 are synonymous even though some may believe them to be so - and I explain why). Writing it challenged me tremendously in coming to grips with what exactly constitutes Web 3.0. It forced me to think more concisely and succinctly about the different elements that bring it together.
It's conceptual; therefore, it's murky. And as a result, we overlook the main elements which are already in place. One of the main points I make is, whereas Web 2.0 is about information overload, Web 3.0 will be about regaining control. So, without further adieu, please take a look at this article, and let me know your thoughts. The article should not leave out the excellent help of the legendary librarian, the Google Scholar, Dean. He helped me out a great deal in fleshing out these ideas. Thanks DG.