On August 6, 1991--20 years ago--Tim Berners-Lee posted a summary of a project for organizing information on a computer network using a "web" of hyperlinks: the "WorldWideWeb," or W3. At the same time, the W3 made its debut as a publicly available service on the Internet.
or maybe not... maybe it is older?
On March 13th, 2009 the World Wide Web will turn 20 years old. Sir Tim Berners-Lee invented this world-changing layer on top of the Internet on this day in 1989.
On August 6, 1991, he [TBL] posted a short summary of the World Wide Web project on the alt.hypertext newsgroup. This date also marked the debut of the Web as a publicly available service on the Internet."
http://en.wikipedia.org/wiki/World_Wide_Web
