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 as DC.creator
- Categories as DC.subject (semicolon delimited, excludes default category)
- If WordPress 2.1 or higher, DC.language
- If license is set, DC.rights.license
- If license is set, author name as DC.rights.rightsHolder
An admin screen under Settings->DC4WP allows the user to set a global content license.