An electronic coupon exchange system is disclosed whereby {HEAD ~ the exchange system} both generates and redeems {TAIL ~ coupons} 
generates
An electronic coupon exchange system is disclosed whereby { HEAD ~ the exchange system } both generates and redeems { TAIL ~ coupons }
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL OTH OTH TAIL TAIL TAIL TAIL TAIL