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A tag cloud (a typical Web 2.0 phenomenon in itself) presenting Web 2.0 themes. An interactive version is available here . The term Web 2.0 was coined in 1999 to describe web sites that use technology beyond the static pages of earlier web sites. It is closely associated with Tim O'Reilly because of the O'Reilly Media Web 2.0 conference which was held in late 2004. [ 1 ] [ 2 ] Although Web 2.0 suggests a new version of the World Wide Web , it does not refer to an update to any technical specification, but rather to cumulative changes in the ways software developers and end-users use the Web.