Facebook subscribe button allows others to subscribe to your public Facebook updates. To add Facebook subscribe button on your WordPress blog, you have to create a new text widget and insert the code snippet provided by Facebook for Subscribe button.
How to Add Facebook Subscribe Button on Your WordPress blog
Make sure that you put your Facebook profile Username in the Profile URL field because you can not put your Facebook Fan Page URL. Here, we need to understand that Facebook Subscribe button is meant for a particular person so that others can subscribe to the public Facebook updates of that person.
After generating the Code, Copy both the HTML5 codes mentioned in box 1 & 2.
#2. Add Subscribe button on WordPress
Go to Widgets and Add a Text Widget to your Sidebar.
Paste both the Subscribe button Codes (1 & 2) in the Text Widget.
This is it, Now you should be able to see a Facebook Subscribe button on the Sidebar.
Facebook Like Button vs. Facebook Subscribe Button
You should understand that Facebook Like button and Facebook Subscribe button is different from each other. If you put both the buttons on your blog then it may create confusion among your visitors. If your blog doesn’t have Facebook fan page and you’re not planning to create a new Fan page in near future then you should immediately install Facebook Subscribe button on your blog.
But if you’ve a Facebook fan page of your blog with less number of likes then I suggest you to concentrate on Facebook Likes first. You can read the related info in my previous post about Facebook Subscribe Button.None found.