Well there's FOAF (RDF Ontology for Social Networking). You may want to use a proprietary backend to manage your data as a social networking provider, but the w

Well there's FOAF (RDF Ontology for Social Networking). You may want to use a proprietary backend to manage your data as a social networking provider, but the w3c schema already exists to share your graph. Here's Tim's foaf data as an example: http://www.w3.org/People/Berners-Lee/card http://www.w3.org/People/Berners-Lee/card