1. A method for facilitating enrollment of a consumer in a networked loyalty program at a computer-based point-of-sale system, the method comprising: transmitting, by the computer-based point-of-sale system for facilitating the enrollment of the consumer in the networked loyalty program, and to a host system, consumer enrollment data; transmitting, by the computer-based point-of-sale system and to the host system, a transaction file comprising a consumer identification (ID) and purchase data containing a retailer item identifier, wherein the host system standardizes the transaction file using the retailer item identifier by associating the retailer item identifier and a manufacturer item identifier, and deriving a standard identifier, wherein the standardizing characterizes at least one of a particular product or service across a plurality of retailers, and wherein the host system merges the consumer enrollment data with the transaction file to generate a purchaser profile which reflects consumer purchases across one or more of the plurality of retailers; and receiving, by the computer-based point-of-sale system, confirmation of the consumer enrollment data.