
Once an offer has been made official, the customers are charged, and the “groupon” appears in their account. Subscribers are encouraged to share Groupon offers with their friends via e-mail or social networking sites in order to secure the minimum number of sales. Deals are not official until a predetermined number-which varies on a per-case basis-have been purchased, ensuring that the discount is potentially profitable for the offerer. Offers range from car tune-ups and restaurant purchases to spa packages and theatre tickets. Groupon notifies subscribers of daily deals in their chosen home area through e-mail, Facebook posts, Twitter feeds, and mobile phone applications.

Groupon was cofounded by Andrew Mason, Eric Lefkofsky, and Brad Keywell in 2008. The company’s name is a portmanteau of group and coupon. Groupon, American e-commerce company that offers deep discounts, usually 50–90 percent, for popular products and services by using a group discount model.

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