If the clickthrough rate on the banners drops below 0.6%, FeaturedUsers stops charging for impressions until it increases again.

如果banner广告点击率（clickthrough rate）低于0.6%，就会停止收费，直到再次超过0.6%。

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When someone I followbecause I like her work suggests I look at something related to her expertiseand makes it sound interesting in her brief description, I tend to clickthrough and check it out.

我关注一个人是因为我喜欢她的工作，可能我看到一些和她的专长有关的东西，且通过她简短的介绍而变得有趣的东西，我倾向于去点击它看看。

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Many agencies tell their clients to have the goal of optimizing each campaign for a specific clickthrough rate.

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When properly implemented, clickthrough agreements are extremely effective in courts.

FORBES: How Zappos' User Agreement Failed In Court and Left Zappos Legally Naked