A method includes determining whether a social interaction between a first user and a second user includes a shared interest, where the shared interest identifies an interest about which the first user and the second user communicate in the social interaction, identifying a social relationship between the first user and the second user based at least on the social interaction, when the social interaction includes a shared interest, and associating the shared interest with the identified social relationship by referencing the shared interest in the identified social relationship between the first user and the second user.
ANNOTATING SOCIAL GRAPH EDGES WITH INTEREST GRAPH INFORMATION