Groupon negotiates discounts, typically 50 percent to 90 percent off, with local and national retailers and service providers. The deal goes to everyone who subscribes to Groupon's daily email newsletter. The members get a deal and the business gets a bunch of new customers. If you prefer not to be alerted by email, you can visit the site and search by city or area. Each deal is limited by both time and quantity, and it's not activated until a minimum number of people agree to buy. Returns: "If you ever feel like Groupon let you down, give us a call and we'll return your purchase - simple as that."
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