Pjman - 1:24 am on May 25, 2012 (gmt 0)
I was the guy that lost on the direct link to facebook site wide and then regained after removing it.
I have noticed by focusing on add social buttons that my users actual use and find helpful does help. It does take like 8 weeks to see gains.
I would give it a few weeks to see if G just reacted to the massive code change. I notice that I always lose with site wide changes and then weeks later it comes back.