For some behaviors, such as smoking or drinking, the direct network effect is quite apparent, Fletcher says.

对于一些行为如吸烟或饮酒来说，直接的网络效应相当明显，弗莱彻说。

youdao

The network effect of social media overwhelmed her family and friends.

网络媒体的社会影响让她的家人和朋友都不知所措。

youdao

So, it is possible that the network effect has a natural plateau.

所以，网络效应很可能与生俱来就存在一种高原现象。

youdao

Well, Groupon used the disruptive tools available to every small- and mid-sized firm to gain a competitive advantage in the marketplace and capture that ever-elusive network effect.

FORBES: Why Midsize Companies Are Set to Lead Economic Growth

Now, despite the many learned treatises written on the network effect, it remains unpredictable - what decides whether a joke goes viral, or an appeal for help remains unheard?

BBC: A lost bag - returned by the open web

We believe a crowdfunding model provides a powerful network effect that can help increase options, and decision-making, for individual investors.

FORBES: Why Steve Rattner is Wrong on Crowdfunding