An
interesting extract from a book published in 2004, before Second Life and its bretheren came along. It's description of 'hybrid cyberspace' sounds exactly like SL, but it also suggests that there might be other ways of looking at and interacting with virtuality. In particular, the description of 'hypervirtuality' is intriguing... though how one would create such a non-space-dependant environment given the space-bound-ness of the current SL and OpenSim client and server software is thoroughly beyond me.
Fun to think about though.