Aspects of the subject technology relate to a social-networking system, including one or more computers communicatively coupled via a network. In certain aspects, the computers are configured to perform operations including, receiving one or more indications that a common user has initiated a connection with each of a plurality of contacts in a social network and identifying two or more contacts, from among the plurality of contacts, that share a temporal relationship with respect to the connections formed between the common user and the respective two or more contacts in the social network. In certain implementations, the operations can further include comparing information associated with the two or more contacts to determine a likelihood that a common feature is shared by the two or more contacts. Computer-implemented methods and computer-readable media are also provided.