I'm having an odd visual effect (flickering, transparency, and some anchors in the background appearing on top) when hovering on the FB comment box, tested in FF & Chrome.
After looking a little at addthis css, I found the problems is caused by this style:
disabling this style solves the problem, is there any reason for this? (shouldn't the comment box be opaque?), can this style be removed?
thanks in advance, and keep up the great work!