SCORING AUTHORS OF SOCIAL NETWORK CONTENT

Methods, systems, and apparatus, including computer programs encoded on computer storage media, for scoring authors of social network content. One method includes obtaining a directed interaction graph having nodes representing users and directed edges including interaction edges representing interactions with one or more posts, assigning a weight to each interaction edge in the interaction graph, calculating a user score for each of the users from the graph, and providing the user scores to a ranking system that scores posts generated by users relative to other posts generated by other users based, at least in part, on the user scores of the users and the other users.