"The Semantic Web vision was conceived by Tim Berners-Lee, the inventor of the World Wide Web. The World Wide Web changed the way we communicate, the way we do business, the way we seek information and entertainment – the very way most of us live our daily lives. Calling it the next step in Web evolution, Berners-Lee defines the Semantic Web as “a web of data that can be processed directly and indirectly by machines.” (http://www.altova.com/semantic_web.html)
It seems the semantic web is simply a way for computers to understand information, so that they can perform the tedious jobs of finding, sharing and combining information on the web.
Tim Berners-Lee originally expressed the vision of the semantic web as follows:
"I have a dream for the Web [in which computers] become capable of analyzing all the data on the Web – the content, links, and transactions between people and computers."
Web 2.0 is focused on the user of a computer. The Semantic web is focused on how the computer and machines operate. The Web requires a human operator, using computer systems to perform the tasks required to find, search and aggregate its information. It's impossible for a computer to do these tasks without human guidance because Web pages are specifically designed for human readers. The Semantic Web aims to change that by presenting web page data in such a way that it is understood by computers, without needing a human operator.
It seems there is not just one single semantic web, there is thousands or maybe even millions, all of which are universally accessible, and none are owned or governed by one company. This will surely mean it will run in the same way that the Web already does.
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