We are about to start a project that builds a social network. There is a symmetric and transitive relationship LinkedIn-like "is contact of". At any given time we need to know the size of someone''s network, be able to determine whether someone is contact of someone, and most importantly to be able to bound searches to someone''s network. Given those requeriments the representation of the graph seems crucial a priori. Do you have any advice on how to implement that with AR? -- fxn