1. A method, comprising: selecting, by a server system, an object user; obtaining, by the server system, content objects associated with the object user; determining, by the server system, a ranking of the content objects; determining, by the server system, a rotation value; presenting, by the server system, the content objects based on the ranking of the content objects and the rotation value; obtaining, by the server system, user feedback associated with the presented content objects, the user feedback comprising one or more user interface inputs, the user feedback obtained at least partially from one or more remote user systems over a communication network; determining, by the server system, an empirical content object score for each of the content objects based on the user feedback; obtaining, by the server system, behavioral data of an observer user, the observer user being a presentation target of the presented content objects; determining, by the server system, a behavioral score for each of at least one content object of the content objects based on the behavioral data; determining, by the server system, a composite score for each of the at least one content object of the content objects, each composite score determined based on the empirical score and the behavioral score associated with a corresponding content object; updating, by the server system, the ranking of the content objects based on the one or more composite scores; and presenting, by the server system, at least one of the content objects to the observer user based on the updated ranking.