With a CMSMS Facefook widget you can integrate Facebook into any sidebar on your website. It helps to make your site social using a Facebook page. You’ll get a Like Box, which enables users to:
- See how many users already like this Page, and which of their friends like it too;
- Like the Page with one click, without needing to visit the Page

widget-1

 

You need to add a link to you Facebook page  into the widget field. See what it will look like on the front end:

widget-2

Performance in different themes:

 
This widget is available in all themes with identical functionality