Tried a few Facebook extensions over the years. This looks good, easy to use and responsive. Installed on Joomla 3.2.3. Only minor point is would be happy to pay a small fee to remove the link but it is not obtrusive.
Been using for years with great success on many sites and certainly seems to help google rankings. Just needed to raise my first support ticket in a long time and had a quick response which fixed my issue. Highly recommended.