Abstract: There is provided a system and methodology for identifying the heaviest product purchasers who regularly use coupons and determining their promotional behavior response patterns of which involves initially preparing a list of names and addresses of consumers who are the most likely heaviest product purchasers who are regular coupon users and then delivering to them a plurality of product purchase incentives such as cents off coupons. The delivery of the coupons to the selected consumer households would also include at least one and preferably a plurality of consumer activated encoding devices each of which being designed to be attached to a coupon. The at least one consumer activated encoding device delivered to each consumer includes the name and address of the receiving consumer in machine readable language.