Developed under the guidance of the World Wide Web Consortium, RDF was designed to allow developers to build search engines that rely on the metadata and to allow Internet users to share Web site information more readily. RDF relies on XML as an interchange syntax, creating an ontology system for the exchange of information on the Web.

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

An Introduction to the Resource Description Framework
This article from 1998 is a good resource for beginning to understand RDF.

Dave Beckett's Resource Description Framework (RDF) Resource Guide
This guide contains links to many RDF resources including examples, documents, software, tools and projects that use it.

Resource Description Framework Model and Syntax Specification
Proposed Recommendation of the W3C from January 5, 1999.

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