OnFacebookLike - fires when the Facebook Like standard button is clicked.
OnFacebookSend - fires when the Facebook Send standard button is clicked.
OnFacebookUnLike - fires when the Facebook UnLike standard button is clicked.
OnGooglePlusOneOff - fires when the GooglePlus standard button is clicked for disapproval.
OnGooglePlusOneOn - fires when the GooglePlus standard button is clicked for approval.
OnLinkedInShare - fires when the LinkedIn standard button is clicked.
OnTweet - fires when the tweet is posted.