A method is disclosed for analyzing information from social media websites and providing advertisements based on this information. Social media websites are analyzed to determine topics of conversation and, for particular users, areas of interest, levels of expertise, and areas of influence over other users. User information, content, and relationships may be analyzed across different social media websites to match users on different social media websites to a single actual person and thereby obtain additional information about that person. Advertisements may be created which are targeted to a very specific type of user, such as by targeting a particular interest, level of expertise, etc. Users of the social media websites may be qualified according to their interest, expertise, and area of influence and particular users may be chosen for advertisements based on these metrics. Advertisements may be presented to particular qualified users and not to general users.