What Worked For Me
For those who the above didn't work:
If you happen to be trying to use AddThis with UTM codes or other querystring variables, here's what finally worked for me.
As per Sol, use OpenGraph meta tags but then use the FB Debugger to verify that Facebook cache has been refreshed and got all the proper meta tags in the page header correctly, then verify that there are no querystring UTMs/variables your AddThis sharing link to facebook. For my purposes, Index.html couldn't include any querystring variables or AddThis passed the URL incorrectly to Facebook. The only way that worked for me looks like this:
<a href="http://api.addthis.com/oexchange/0.8/forward/facebook/offer?pco=tbx32nj-1.0&url=https%3A%2F%2Fwww.example.com%2Findex.html" target="_blank" ><img src="http://cache.addthiscdn.com/icons/v1/thumbs/32x32/facebook.png" border="0" alt="Facebook" /></a>
What Failed For Me
When trying to use the below AddThis "data_track_addressbar" and "addthis_widget.js" modules for sharing, Facebook completely fail to pull the new OpenGraph Meta Tags.
<script type="text/javascript">var addthis_config = {"data_track_addressbar":false};</script>
<script type="text/javascript" src="//s7.addthis.com/js/300/addthis_widget.js"></script>