The recent rise of daily deal sites, coupon websites and online deal sites now available to customers has create the term called "deal whores".
These are individuals who will only go into a business once they obtain a valid voucher, deal or coupon code. Typically lacking in loyalty, having no genuine interest in trying most businesses, they simply chase the next deal resembling whore like behaviour.
Employee says: "That looks like a good bunch of customers over there"
Employer says: "No, all 10 of them had vouchers for 60% off deal we did 5 months ago, I think they are a bunch of deal whores"
Mark: "Oh we still need to go to that Italian on 4th street, I have two vouchers for it"
Paul: "I thought you had 5 different vouchers we needed to use"
Mark "Yes I do, I am turning into a right deal whore"