A standard industry measure of a retailer’s success is same-store sales growth.  This metric is fundamental to understanding whether a retailers’ stores are growing or declining, and is frequently used as a key barometer to measure the health of publicly-held retailers.  The challenge with using same-store sales solely to measure the success of a loyalty or CRM program is that many factors influence same-store sales growth and it’s difficult to isolate the impact of the loyalty program.  Same-store sales is an important overall metric for gauging a retailers’ health and ProLogic uses it in combination with other more loyalty-specific metrics to measure the success of our programs with retailers.