PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Most of these do not trade information between each other.However, it is true that the US courts have been asking sites such as Google or Yahoo to forward their user's information, so the tendency could be going towards such a centralized system.If you are looking for systems in which people's actions and thoughts are restricted, China or USSR would be better examples.
http://www.w3.org/ns/prov#wasQuotedFrom
  • slashdot.org