1. A method comprising: by one or more computing devices, maintaining one or more data stores storing a social graph associated with a social networking system, the social graph comprising a plurality of user nodes, a plurality of concept nodes, one or more meta nodes, and a plurality of edges between nodes, wherein: a user node corresponds to a user of the social networking system; a concept node corresponds to a concept; and a meta node comprises one or more attributes shared by one or more of the concept nodes, the meta node being connected by a respective edge to each of the concept nodes sharing the attributes; by one or more of the computing devices, receiving a request associated with a first user, wherein a user node for the first user is associated with a first one of the concept nodes; by one or more of the computing devices, identifying at least one of the meta nodes, wherein the identified meta node is connected to the first concept node; by one or more of the computing devices, identifying one or more second ones of the concept nodes, wherein each of the second concept nodes is connected to the at least one meta node; by one or more of the computing devices, determining a value for each of the second concept nodes; and by one or more of the computing devices, presenting, to the first user, information related to at least one of the second concept nodes based on respective values for the second concept nodes.