Everyone's favourite blog on library 2.0, librarycrunch discusses an article on what library 2.0 is.The article is entitled Library 2.0 Theory: Web 2.0 and Its Implications for Libraries. Librarycrunch describes it thus:-
He presents a very well-argued thesis that Library 2.0 is primarily a technology-centered theory. While I agree that technology does play a key role in the ability of today's library to move forward and serve more users, I am not convinced that technology can ever be the primary component in this thing we call Library 2.0.
Still worth a read though.