Adds the following Dublin Core metadata elements to posts and pages: Site name as DC.publisher Site URL as DC.publisher.url Post title as DC.title Permalink as DC.identifier Date created as DC.date.created Author (last name, first name) as DC.creator.name Categories and tags as DC.subject (repeated element, excludes default category) If WordPress 2.1 or higher, DC.language If license is set, DC.rights.license Author name as DC.rights.rightsHolder An admin screen under Settings->DC4WP allows the user to set a global content license.