After trying some other commercial extensions, and realizing they are not even close to what we are really looking for, we found this module and I cannot express how satisfied we are. It took about 2 minutes to set it up and works like a charm. No need to bug with FB developer applications, this is really out of box.
One of the features that was extremely important for us was responsiveness and this module is the only one we could find on the market that has this feature. Don't think twice about purchasing it! Worth every cent!!!