I can't believe I didn't read Snow Crash until now. Snow Crash is a novel by Neal Stephenson in which he introduced the Metaverse. What we would call today a virtual reality world. While I was reading it, I had to remind myself that the book was published in 1992. More than 10 years ahead of Second Life and WOW.
Today, we are in the initial stages of a new generation of virtual reality. Next year we will see the launch of Oculus Rift, and Project Morpheus!