The idea of Web X is that it combines web 2.0 (social web) and web 3.0 (semantic web) to create what I have called .... the semantic social web. But it's more than just that, because it takes these and moves them off the web and into your hand. And more than just that, because it's the web of data, the geoweb, augmented media, the 3D web, and more. The eXtended web - the web, extended from the internet, into your life (cit. from Stephen Downes)

[traduzione in lavorazione :-P]