Abstract: A computer-implemented method enables consumers to purchase products or services from merchants using consumer loyalty programs. The method is implemented in a computer system communicating with client devices operated by consumers and merchants. The method features: (a) transmitting a deal to client devices operated by consumers, the deal enabling consumers to purchase a given product or service from one of a set of one or more merchants; (b) receiving from a client device operated by a consumer a deal purchase including consumer payment information for the given product or service; (c) associating the deal purchase with an identifier of a loyalty program account of the consumer in one or more loyalty programs of the set of one or more merchants; and (d) notifying at least one of the set of one or more merchants of the deal purchase such that the consumer can be credited for the deal purchase.