Hi Erica,
I apologize for the delayed reply, I just got to these steps on my own domain referral (took longer than expected)
Take the first example I posted up here:
http://moz.com/blog/image-seo-basics-whiteboard-friday
First, on the beginning of the post it links back to http://www.seomoz.org/blog/video-seo-basics-whiteboard-friday-11080, which is there redirected to moz.com equivalent page. This seems like a wasted step unless it is on purpose.
Secondly, it has lots of social shares and the number count is taken from the original MOZ posts.
Just "view source" and search for: "Get your social on" and you'll see the following:
div class="fb-like" data-href="http://www.seomoz.org/blog/image-seo-basics-whiteboard-friday"
a href="https://twitter.com/share" class="twitter-share-button" data-counturl="http://www.seomoz.org/blog/image-seo-basics-whiteboard-friday"
div class="g-plusone" data-size="tall" data-href="http://www.seomoz.org/blog/image-seo-basics-whiteboard-friday"
I wonder what it means about new shares and if this was on purpose...
Also, how did you change your Facebook name to MOZ when you have more than 200 likes...?
Thanks