blog and parsing out the RDFa 1.0 metadata with the RDFa Distiller and Parser shows that Drupal 7 is using the SIOC (Semantically-Interlinked Online Communities) ontology to describe blog posts and identifies the Drupal user as the creator of the post using the sioc:has_creator property. <sioc:Post rdf:about="http://137breakerbay.3kbo.com/test"> <rdf:type rdf:resource="http://rdfs.org/sioc/types#BlogPost"/> ... <sioc:has_creator>