Abstract: Systems, methods and computer program products for identifying recurring purchases of the same good or service based upon item-level electronic transaction data. Item-level electronic transaction data is analyzed to determine a purchase interval of a good or service. A consumer is reminded to purchase the good or service based on the determined purchase interval by receiving an electronic message at a consumer computer or mobile communication device, e.g., in the form of an electronic shopping list. Purchase intervals of different items may be determined such that a list generated at one time may include certain goods and services but a list generated at another time may include other goods and services due to the variable time between purchasing different goods and services.

Abstract: A system that tracks parameters associated with a redemption certificate is presented. During operation, the system receives parameters associated with the redemption certificate. The system then determines whether the parameters indicate that a specified event has occurred. If so, the system performs a specified action for the specified event.