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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The ones that did not break became mass produced in other General Motors products; the ones that didn't stand the test of user "beatings" were discontinued, saving the car company money.

不烂的都在其它通用汽车的产品中大量生产；没通过消费者“摔打”测试的都停产了，给公司省钱。

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What if, instead of typing Mass, the user entered just Ma?

万一用户只想输入Ma，而不是Mass呢？

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Designed for both the first-time smartphone user and the mass 4G LTE market, Lucid2 by LG helps smartphone users effortlessly and intuitively manage the fun and busyness of everyday life.

ENGADGET: LG Lucid2 available at Verizon for free on April 4th, entry-level smartphone lovers rejoice

She noted that one possible cause may be Google's "smart" algorithms - technology which automatically adapts advertising placement based on mass-user habits.

BBC: Google searches expose racial bias, says study of names

For now, Google plans to circulate only a few hundred videos created by commercial media companies rather than tangling with the mass of user-generated clips that make up the bulk of YouTube content.

FORBES: Magazine Article