你有没有想过 Facebook 是如何伪造 Gmail 消息列表中的摘要文本的？
例如，Gmail 收件箱显示一条消息，内容为“XXX 在 Facebook 上标记了你。看看她对你说了什么。”
但是当你打开消息时，却没有“看看她对你说了什么。”
答案是：文本存在但被隐藏了：
<span style="color:#FFFFFF;font-size:1px;opacity:0;">看看她对你说了什么。</span>
毫不意外的是，每当我点击进去时，我发现她并没有说过关于我的任何事情。
查看原文
E.g. Gmail inbox shows a message contains "XXX tagged you on Facebook. Take a look about what she said on you."<p>But when you open the message, there's no "Take a look about what she said on you."<p>Answer. The text is present but hidden:<p><span style=3D"color:#FFFFFF;font-size:1px;opacity:0;">Take a look at what she said about you.</span><p>And unsurprisingly whenever I do click through, I find she hasn't said anything about me.