7. A computer implemented method comprising: receiving a set of actions indicating interactions with web content, the set of actions including scored and unscored actions where a scored action is associated with a score of at least one property of a user associated with the action; determining scores for the web content based on the scores for the set of actions; after determining the scores, determining initial scores for the unscored actions; rescaling, by one or more processors, the determined scores based at least in part on the initial scores for the unscored actions; determining, by the one or more processors, revised action scores for the unscored actions based on the rescaled scores; and rescaling, by the one or more processors, the revised action scores based at least in part on the revised action scores for the unscored actions.
8. The method of claim 7 , further comprising: determining when the revised action scores have stabilized; and when the revised traversal scores have not stabilized, then repeating the determining scores step through the rescaling the revised action scores step until the revised action scores have stabilized.