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Add Facebook Like Box to Blogger
1. Find out your Facebook fan page URL by visiting your Facebook fan page and copy the url in the address bar, you can see how your url should look like in my screenshot:
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2. Then visit this page: http://developers.facebook.com/docs/reference/plugins/like-box
3. Paste your url into the Facebook Page URL field as it is shown below:
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4. Once you are satisfied with the looks of the Like Box, click on the "Get Code" button
5. You'll be given two codes, titled HTML 5, XFBML and IFRAME. You only need the iframe code.
Select it and copy the code generated for your box as it is shown in the example below:
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6. Then go to your Blogger Dashboard >> Design >> Page Elements >> click on the Add a Gadget link >> select HTML/JavaScript and paste the code in the HTML box.
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7. Click Save and you're done.