Selected answers from the Dumb SEO Questions Facebook & G+ community.
Casey Markee: TrustPilot is one of the "approved" 3rd party providers for Google Seller Ratings. They provide a very simple "TrustBox" functionality that makes it easier to generate Rich Snippet Seller Aggregate Ratings in the SERPs.
You can view the full list of "approved" 3rd party seller rating extension providers on Google`s page here:
https://support.google.com/adwords/answer/2375474?hl=en
Jody Nesbitt: Patty which would you click, you can then decide if value is real or perceived