去年夏天，赖斯大学的Utpal Dholakia访问了150家做过团宝促销活动的商户。

Last summer Utpal Dholakia of Rice University interviewed 150 businesses that had done Groupon promotions.

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结果，在促销活动开始时，零售系统会遇到一个巨大的访问峰值，这会给处于相对冷机状态的系统造成巨大的压力。

As a result, at the start of the sales event, the retailers systems experience a tremendous spike in volume, placing a tremendous stress on the relatively cold system.

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促销活动包括通常所谓的 “意外顾客折扣”，这是一种为在活动开始后访问网站的首次在线购物者提供特殊折扣。

Promotions include those commonly called “door-crasher specials”, which are promotions providing special discounts to the first online shoppers to enter the site after the start of the event.

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