| http://www.w3.org/ns/prov#value | - In addition, the referrals module 230 may provide incentives, discounts, or other rewards based on the number of referrals received from a particular merchant or a group of merchants. [0049] A send card/reminder module 240 allows a merchant to send reminders, such as electronic cards, emails, letters, or coupons, for example, to customers.
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