1. A method of managing an identity graph repository web service on a repository server computer, said method comprising: collecting a first identity graph of a first internet user, said first identity graph comprising a plurality of first user internet identifiers of said first internet user, each of said first user internet identifiers comprising a URL used by said first internet user in accessing a web service or application; collecting a second identity graph of a second internet user, said second identity graph comprising a plurality of second user internet identifiers of said second internet user, each of said second internet identifiers comprising a URL used by said second internet user in accessing a web service or application; storing said first and second identity graphs in a repository electronic memory associated with said repository server computer; and responsive to a request from a client computer, communicating one of said identity graphs to said client computer and displaying it on said client computer.