Groupon: from dotcom star to just another coupon business

Last November, Andrew Mason, former music student turned internet wunderkind, was celebrating. Groupon, the daily deals site he founded and at that point "the fastest-growing company ever", had just raised $700m and was being valued at $13bn. It was the biggest technology flotation since Google. Mason had even been given the ultimate Google seal of approval, having recently turned down

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