Groupon Files To Raise $750 Million In IPO After Sales Surge [Getty Images]

Groupon Inc.'s homepage on a monitor in New York, U.S., on Thursday, June 2, 2011. Groupon Inc., the largest provider of online coupons, filed to raise $750 million in an initial public offering, giving shareholders a chance to bet on the burgeoning daily-deal market. Photographer: Joseph Valenti/Bloomberg via Getty Images

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