Online marketing company Moz recently released study results revealing that aside from page authority, a Web page's number of Google +1s
is more highly correlated with search rankings than any other factor.
Examples include a full history log of surveys completed, rewards claimed and friends invited through the programme, as well as a Facebook sign-up and Google +1
option that allows members to comment and share pages with friends.
Suggested social sharing buttons for each page include: Google +1
, Facebook like, Tweet and LinkedIn.