"Subj3ct is a registry and clearinghouse service for subject identifiers for the Semantic Web. Our goal is to provide the functionality that we believe is required to realize the vision of the Semantic Web or Web 3.0. Using the Subj3ct portal and APIs it is possible to register XML feeds that provide information and identifiers for the concepts that you or your applications are interested in and to connect your identifiers with other identifiers created by other people for the same concepts. By enabling the sharing and publication of subject identifiers on the web, Subj3ct is a platform that enables communication between applications and human-beings across the Web."