A method and structure for identifying potential relationships between users of a computer network is disclosed. The invention extracts relationship information from databases in the computer network in order to establish multiple relationship chains of the users from the relationship information. More specifically, the invention evaluates network information and network communications between the users to produce metrics and processes the metrics to produce contact information. The contact information indicates whether a personal relationship exists between two users. In addition, the invention can produce relationship values representing strengths of social relationships between users of the computer network based on such relationship information.