1. A computer-implemented method for controlling serving of an ad using its relevancy to a request, the method comprising: a) accepting, by a computer system including at least one computer, geolocation information associated with the request; b) comparing, by the computer system, the accepted geolocation information associated with the request with geolocation targeting information associated with the ad to generate a comparison result; c) determining, by the computer system, the relevancy of the ad using at least the comparison result; d) controlling, by the computer system, the serving of the ad, for rendering on a client device, using the determined relevancy of the ad; e) determining, by the computer system, whether the ad has geolocation price information corresponding to the geolocation information accepted; and f) if it is determined that the ad has geolocation price information corresponding to the geolocation information accepted, then determining, by the computer system, a score using at least the geolocation price information, otherwise determining, by the computer system, the score using at least general price information of the ad, wherein the act of controlling the serving of the ad further uses the score of the ad, and wherein the geolocation targeting information associated with the ad corresponds to an area defined by at least one geographic reference point.