communities , as detailed in some respect on http://automenta.com/netention  is by use and combination of certain vocabularies such as FOAF http://en.wikipedia.org/wiki/FOAF_(software) "  is a  machine-readable   ontology  describing  persons , their activities and their relations to other people and objects." and RDF Schema http://en.wikipedia.org/wiki/Rdf_schema     Login or register to post comments