A method of advertising on a communication network, includes the use of computational equipment for receiving a network request from a user, transmitting via a network advertising data for presenting an advertisement to the user, receiving a first transmission indicative of a user responding to such advertisement and storing information relating to the user's response. A second transmission is received indicative of a purchase of the item by a user where payment for such purchase is identified by a transaction card. The data for the second transmission is obtained from a data storage that includes data indicative of purchases by a plurality of users at a plurality of merchants, and such data is used to determine that a purchase occurred at a location where a user traveled for such purchase. A reward is generated corresponding to the user responding to the advertisement.