Simple Theme - enabling Facebook comments
From Spiffy Stores Knowledge Base
Enabling Facebook comments
Increase your social engagement by allowing your visitors to post comments on your blog articles. This can be enabled Facebook comments on your blog articles in the "Blog" section of your Theme editor. To get to your Theme editor, go to the "Design & Assets -> Theme editor" section of your store's admin area.
If you have a Facebook account, enter your user ID (the email address you use to log in to Facebook). If you don't have a Facebook account, go to http://www.facebook.com to sign up.
We strongly recommend that you get an App ID, so that you're able to moderate comments... so that visitors can't post SPAM or negative comments. You can get an App ID for your store at http://developers.facebook.com/setup/.
Once you have an App ID, add it in to your theme editor, and click the "Save changes" button.
You can then moderate any comments made on your blog posts at http://developers.facebook.com/tools/comments
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