The metaphor of the Web as a library, though useful, also misdirects our attention and understanding away from its nature as collection of temporary manifestations. Because, for all we attempt to give the Web a sense of permanence, it is evanescent, temporary, ephemeral. We write and publish there as we might on snow, sand or a whiteboard. Even the websites we are said to "own" are in fact only rented.
--Doc Searls http://blogs.harvard.edu/doc/2020/07/10/the-future-of-now/