1. A method for providing targeted questions to a user of a social networking system, the method comprising: providing a question interface to the user of the social networking system for display, the question interface comprising a plurality of selectable topics, each selectable topic associated with one or more tags stored by the social networking system; receiving a selection of a topic in the question interface from the user; retrieving profile information related to the user, the profile information including the user's tag affinities; selecting questions based on tags related to the selected topic; sorting the questions based on the user's affinities for the tags; and providing one or more of the sorted questions in the question interface for display to the user.