Systems and methods for annotating a content item may include determining statistical data concerning the at least one resource, brand, product, or service. A statistic of the statistical data may be associated with a content item associated with the at least one resource, brand, product, or service. A request for a content item may be received from a client device and the content item associated with the statistic of the statistical data may be selected in response to the request. Data to effect presentation of the selected content item and data to effect presentation of an annotation with the selected content item may be served. The annotation may be based, at least in part, on the statistic of the statistical data.