Common characteristics: self service customer acquisition, critical mass, runaway user growth, winner take all markets, complex ux, network effects, typically create new ways for people to interact.

共同特征：自助式服务，自然获取用户，达到网络效应的临界质量，失控的用户增长速度，赢家通吃的市场环境，复杂的用户体验，网络效应，以创造新的用户社交互动方式为典型。

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"Purchasing golden winner" of "purchase" magazine in the United States, summarized life experience that the service value should be sure suppliers.

美国《采购》杂志“采购金牌”得主，总结一生之经验，有一点就是要肯定供应商的服务价值。

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Ensure every winner can bring most advantage to TSF, including good price, good quality, good service and good cooperation. Ensure the operational improvement of S/S on purchasing view;

确保中标单位能为公司从价格、质量、服务及配合方面带来最大的价值， 从采购角度确保油站营运效果的提升；

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Gulbis then fashioned a break-point chance in game 10, only for Murray to respond with a service winner of his own.

BBC: Murray starts with convincing win

But he recovered to 5-5 and then won an epic rally with a dipping backhand to the Finn's feet before finding a service winner on set point.

BBC: Murray comes through Paris opener

Not much to cheer for after that, though: Williams won the next three points with a 111 mph ace, a 100 mph ace, and a 101 mph service winner.

NPR: Ex-No. 1 Jankovic Advances At Rainy French Open