A system and method for determining a social network. A metrics database stores virtual object indicia including document attributes, activities, and associated persons. A query engine responsive to a user request and the metrics database infers individual connections to the virtual object by individuals executing the activities. A visualization engine visualizes membership in the social network as including these individuals and the activities connecting them. The query engine further collects a plurality of documents having non-unique values on a first shared attribute into an aggregate, and the visualization engine further filters the social network to include only individuals having membership in the aggregate.