1. A method comprising: receiving information about users of a social networking system, the information describing connections between users of the social networking system and actions taken by users on the social networking system, and comprises for each user, an analysis of posted content by the user that indicates a higher-than-average income potential or a lower-than-average income potential as compared to other analyses of posted content by other users in the social networking system; defining, by a computer processor, a predictive model of an income bracket of an income distribution of the users of the social networking system by selecting predictive factors based on the received information about the users in the income bracket; and defining ranges for the income bracket based on the received information.
13. The method of claim 1 , wherein the actions taken by users on the social networking system are selected from a group consisting of: commenting on a photo album, communications between users, becoming a fan of a musician, adding an event to a calendar, or interactions with advertisements on the social networking system.