Maciej Książek
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Groupon
Groupon features a daily deal on the best stuff to do, see, eat, and buy in cities across the United States. By promising businesses a minimum number of customers, we can offer deals that aren't available elsewhere.
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Just-Eat.com
Just-Eat provides a market place for restaurants who deliver and hungry customers to meet.
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nooked
nooked delivers shopping deals direct to consumers desktop, Myspace, Facebook, home page, and mobile phones