Every web surfer, in the course of his or her browsing, has been forced to stop and perform this weird little task.

每一个互联网用户在浏览的过程中，都不得不停下来完成一个奇怪的小任务。

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If you are a frequent web surfer then you know the dangers that lurk on the Internet.

如果您经常上网浏览，然后你知道危险隐藏在互联网上。

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And to any frequent Web surfer, this ability will make your application feel faster, more responsive, and bring them back over and over again.

对于那些经常上网的人，这种能力可以让您的应用程序感觉更快、响应更及时，让他们不时地光顾您的网站。

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Comscore says the average U.S. web surfer watches 14.8 hours of online video per month.

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He says the same surf cams that check the surf also tell a Web surfer when the beach is too crowded.

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But does that introduce too much complexity for the average web surfer?

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