Developers can use standard HTML forms, but Facebook adds more parameters in the form of hidden inputs.

开发者可以使用标准的表单标签，但是Facebook以隐含输入的方式加入了更多的参数。

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This allows Facebook to confirm that the logged in user submitted the form and also to send the form information back to the correct application.

这样Facebook可以确认登陆的用户提交了表单并且将表单的信息送回给正确的应用程序。

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For example, Facebook handles HTML form tags in a special way.

例如，Facebook以一种特殊的方式处理HTML Form(表单)标签。

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Incoming messages pop up on the top right in the form of what Facebook calls chat heads, which are bubbles that each represent a particular conversation thread and is displayed via a pop-over dialog box.

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The same survey showed more than 5 million U.S. households were exposed to some form of abuse on Facebook, including bullying, virus infections and identity theft.

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Zynga and Facebook engaged in a five-year-long commitment in May, agreeing that Facebook Credits would be the exclusive form of currency used for all Zynga games hosted on Facebook.

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