Display of social content

In general, one aspect of the subject matter described in this specification can be embodied in methods that include identifying social content related to online content for display to a user, determining social content providers associated with the identified social content, calculating quantities based on the user's interaction with each of the respective social content providers, and displaying at least some of the social content based on the calculated quantities. Other embodiments of this aspect include corresponding systems, apparatus, and computer program products.