Having issues with the content of the Facebook box being hidden underneath another Div:
Try the Facebook "like"
The submit button is below the comments div.
Would it be a case of adding a z-index to css class : addthis_toolbox or similar ?
If so - shouldn't \plugins\addthis\css\addthis.css be referenced by the page ? Doesn't seem to be.
(Not a php/wordpress expert)