Facebook Like Button
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The Facebook Like button enables users to make connections to your pages and share content back to their friends on Facebook with one click. Since the content is hosted by Facebook, the button can display personalized content whether or not the user has logged into your site. For logged-in Facebook users, the button is personalized to highlight friends who have also liked the page.
The basic Like button is available via a simple iframe you can drop into your page easily.
The videos show how to create your a Like button for your site and embed it so that Facebook users can share your content.