Facebook has come up with a new set of Social plugins which enable you to provide engaging social experiences to your users with just a line of HTML. The Facebook Like Button is One of them. You can see a demo of the like button on this page. The Facebook like button will allow your readers to quickly share your posts with their Facebook Friends. You can also get to know how many people liked your Blog Post.
1. Go to Layout (Design) > Edit HTML and check “Expand Widget Templates”.
2. Find <data:post.body/> and immediately after it add the following script.