Thus, exchange system coupons can be modified as needed to target {HEAD ~ consumers} patronizing a particular retail sales store by offering exchange coupons having sufficient discounts or {TAIL ~ other enticements} to motivate consumers into using the exchange system coupons 
Thus , exchange system coupons can be modified as needed to target { HEAD ~ consumers } patronizing a particular retail sales store by offering exchange coupons having sufficient discounts or { TAIL ~ other enticements } to motivate consumers into using the exchange system coupons
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