Firms that can harness powerful network effects, in which users encourage friends and family members to join them on a particular service, may be best placed to fight off the clones.

公司可以利用强大的网络效应影响，号召其客户和朋友与他们一道坚持使用一种服务，这也许是攻克克隆军团的最好方法。

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Because you are not burdened by checking for indirect side effects in the outcome of the aspect, you can more easily stimulate corner cases in the join-point matching and context-passing behavior.

因为不用检查方面的输出的间接副作用，所以可以更容易地产生联结点匹配和上下文传递行为中的临界用例。

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Convert, cut, join, mix and apply effects.

转换，切割，连接，组合和应用效果。

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Thanks to the "network effects" of these sites -- you join because your friends are already there -- it'll becoming increasingly hard to compete with the new king, or perhaps queen, of social bookmarking.

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