See also "What Is The Semantic Web?" in the Did You Know...? section of Webopedia.

Cool URIs for the Semantic Web
This is an HTML conversion of DFKI Technical Memo TM-07-01, Cool URIs for the Semantic Web (PDF).

Semantic Web
The voice of Semantic Web technology.

W3C Style
There are no reasons at all in theory for people to change URIs (or stop maintaining documents), but millions of reasons in practice.

Web 3.0 Conference - May 19-20, 2009 New York City
WebMediaBrands and Mediabistro bring you the foremost event on Web 3.0. Web 3.0 represents the collection of technologies sometimes referred to as semantic web, linked data, natural language processing and mashups. The Web 3.0 Conference will provide solutions for marketers, corporate information managers/CIOs, information technologists, web developers and entrepreneurs looking to make the most of existing information to gain new insight and positively impact the organization's bottom line. May 19-20, 2009 - New York City