A method, system, and computer program product for delivering a targeted advertisement. A first identifier, such as a cookie, corresponding to the a first computer is received from the first computer. A targeted advertisement is delivered to the first computer in response to receiving the first identifier...http://www.google.co.uk/patents/US6298330?utm_source=gb-gplus-sharePatent US6298330 - Communicating with a computer based on the offline purchase history of a particular consumer
