"The term is audacious: Web 2.0. It assumes a certain interpretation of Web history, including enough progress in certain directions to trigger a succession ... Many people-including, or perhaps especially, supporters-critique the"Web 2.0" moniker for definitional reasons. Few can agree on even the general outlines of Web 2.0. It is about no single new development. Moreover, the term is often applied to a heterogeneous mix of relatively familiar and also very emergent technologies .... Ultimately, the label "Web 2.0" is far less important than the concepts, projects, and practices included in its scope."

Bryan Alexander, Educause Review, Vol 41, No 2 (March/April 2006)