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。

youdao

The more people use them, the better they work, and more people use them all the time—a kind of self-stoking mass collaboration that wouldn't have been possible without the Internet.

越多人使用它，它的功能越完善，尔后更多的人，用更多的时间使用它---一种没有Internet就不会出现的、自我激励的公众合作体系。

youdao

Were it not for these counterbalances, humankind would self-destruct out of the sheer mass of its unopposed negativity.

如果不是因为这些弥补的作用，人类就会由于绝对的消极性而自我毁灭了。

youdao

Narcissism, of course, wasn't invented by the Internet and it would be absurd to establish a causal connection between self-love and mass murder.

CNN: Does the internet breed killers?

But the economics will change dramatically if Google or a car company decides to begin mass-producing self-driving cars.

FORBES: High Sensor Costs Won't Stand in the Way of the Self-Driving Future

And Ford is already marketing its new Focus - with its self-proclaimed "intelligent protection system" - as one of the safest vehicles on the mass market.

BBC: How close are we to a crash-proof car?