1. A computer-implemented system, comprising: a social data structure that defines relationships between social content recommended by members of a social network and the recommending members, for processing a personal query of a searching user, the social data structure approximates social distance of the searching user to the recommended social content; a search component that processes the personal query against the social data structure to return a personalized ranking of search results; and a processor that executes computer-executable instructions associated with the social data structure.