These days paradoxes seem to be all around us, constantly produced under the impetus of new technologies but tending to dissolve no less quickly at the instigation of these same technologies. Everything that was considered durable (concepts, organizations, ideas) tends to shift towards immediacy, as if long-term memory can and must become instantaneous memory. New technologies, especially the various networks and mobile telephones, fit less and less into established frames of reference. They go so far as to break with the (...) very notion of a frame, and thus place us in a movement of continuous and chaotic knowledge that the author has dubbed rheomorphism. The Web is increasingly oriented towards interaction among users, and the creation of rudimentary social networks that can provide content that makes good use of the network effects, with or without real visual and interactive rendering of web pages. In this sense, current websites act more as points of presence, or Web portals centred on the user rather than on traditional websites that were more or less static pages of data. (shrink)