Google Plus Share (via Email)
Is the Google + Share supposed to be valid with api.addthis.com/oexchange
<a href="http://api.addthis.com/oexchange/0.8/forward/google_plusone_share/offer?pco=tbxnj-1.0&url=http%3A%2F%2Fexample.com&pubid=PRIVATE" target="_blank" ><img src="http://cache.addthis.com/icons/v1/thumbs/google_plusone_share.gif" border="0" alt="Google +" /></a>