What is a TopicalTrust Subject?

Reading The Trust Ontology I have choosen to use the TopicalTrust concept, which says: a Person trusts a Person at a given level regarding a given subject. The trusting Person is given, the level (trustValue) is easy to determine: just an integer. The person which is trusted (trustedPerson) and the subject (trustSubject) are – per definition of the ontology – rdf:resource. That implies the person and the subject SHOULD be described at a URI at which the trustedPerson rdf:resouce points.

— Thanks to [EtnaRosso][2] for the discussion

[2]: http://www.medisysweb.it/cristiano/foaf.rdf