Abstract: A webpage is opened and a set of advertisements is created based on a request transmitted to an advertisement server. A campaign database returns an optimized set of advertisements selected from the set of advertisements. A request impression is transmitted to a tracking database. A formatted advertisement set is transmitted to, and displayed on, the webpage. In response to a click event selecting an advertisement from the formatted advertisement set, the tracking server matches the consumer to the request impression. The tracking server records the matching of the click event and an advertiser bid at the time the request impression was transmitted. The advertising server sets an advertisement cookie and directs the consumer browser to an advertiser landing page. A second request is transmitted to the tracking server when the user viewing a conversion page. The tracking server matches the advertisement cookie to the request impression and records a conversion.