Template:Facebook/doc

Usage
The first parameter for the Facebook template is the name of the Facebook account. This can be found in the page's URL. For example: if the URL is  http://www.facebook.com/example , then the account name is example. The second parameter is the description or display name.

Examples
In this example, the Facebook user account is markzuckerberg and the description in the link is Mark Zuckerberg:

In this example, there's an ID instead of user name: