Usually it's used through AJAX, so imagine you have a page displaying some content and the user clicks a button that change the state of several things.
通常被用于AJAX中，可以想象一下，你有一个显示了某些内容的页面，用户点击了一个按钮改变了一些东西的状态。
It's a tiny tweak, and it actually doesn't change the content of the message, but it helps quiet some of the emotional noise around a discussion.
这不过是个微小的调整，其实并没有改变所要传达讯息的内容，但这样做有助于消除讨论引发的某些负面情绪。
However, in the past year we’ve seen some major businesses create or change content to drive pure SEO benefit which actually means the content isn’t as beneficial to users themselves.
然而在过去一年，我们发现一些大型的公司创建或修改在线内容，目的单纯是为了搜索引擎优化（SEO）。 实际上，这意味着这些内容对用户本身并不那么有用了。
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