1. A method performed by one or more processing devices, comprising: determining, based on usage of a social network by a user, a maturity score for the user, where the maturity score represents a measure of user development of the user within the social network; for a particular type of content associated with a resource, retrieving, from a set of utility score instructions, a utility score instruction for the particular type of content; wherein the utility score instruction defines, for the particular type of content in the social network, a relationship between a utility score and the maturity score; wherein the utility score represents a measure of utility of the particular type of content to the user as defined by the measure of user development in the social network; and wherein the utility score is determined independent of user input; wherein defined relationships across the set of utility score instructions promote a first pre-defined type of content among less mature users of the social network relative to other maturities of other users of the social network and promote a second pre-defined type of content among more mature users of the social network relative to the other maturities of the other users of the social network; and determining, based on the set of utility score instructions and the maturity score, utility scores for resources that are accessible to the user.