XML.com The Semantic Web: A Primer..."the Semantic Web approach instead develops languages for expressing information in a machine processable form." The question What is the Semantic Web? is being asked with increasing frequency. While mainstream media is content with a high level view, XML developers want to know more, and discover the substance behind the vision. dumbilleddmetadatanetworkoreillyoreillynetprogrammingrdfsemanticwebxhtml with primersemanticweb