The Follow button lets other people follow your public updates on Facebook.
There are two Follow button implementations: XFBML and Iframe. The XFBML (also available in HTML5-compliant markup) version is more versatile, and requires use of the JavaScript SDK. The XFBML dynamically re-sizes its height according to whether there are profile pictures to display.
To get started, just use the configurator below to get code to add to your site.