The Semantic Web [22] holds out a different vision, that of information laid bare so that it can be collected, manipulated, and annotated independent of its location or presentation format- ting. While the Semantic Web promises much more effective access to information, it has faced a chicken-and-egg problem getting off the ground. Without substantial quantities of data avail- able in Semantic Web form, users cannot benefit from tools that work directly with information rather than pages, and Semantic Web-based software agents have little data to show their useful- ness. Without such tools and agents, people continue to seek information using the existing web.
