Facebook recently released a new feature called ‘Like’ which allows you to put a thumbs-up Like button on your site. When a user clicks the button, a ‘xxx likes this content” message is posted on the users Facebook wall. You can see an example under the video here:
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There is also a Like box which allows users to like your site and become a fan of your Facebook page (i.e. they will receive updates via Facebook in the future). You can see an example at the bottom of the sidebar here:
One of the best features is the Like recommendation feature. At first I actually didn’t pay too much notice to it because I was more interested in the button and box, but it’s actually a great tool. If you look in the sidebar here you will see the ‘Recent Likes’ which shows the top ‘Liked’ content from the recent past:
Here’s all the detailed Facebook info for developers which shows how to get this going on your site. There are two options for coding, I chose the iframe because I’ve had problems with the XFBML not validating. However the iframe also needs to have the allowtransparency stripped out of it for validation.
Like Button – Facebook Developers