Google Merchant entered into an agreement with "Bizrate Insights" in the US, UK and Germany. "The Insights program gets reviews from shoppers who've actually completed a transaction on your site, which means that it's content you can trust to help you improve and promote your customer experience. Bizrate ratings have been an important component of our seller ratings, and we'll now be able to include full text of review, so shoppers can get full picture before they buy," explains Google.
Bizrate Insights is free; Getting started involved: Open an account or use existing account; Get unique MID (merchant identification number); Upload two logos for best survey response rate; Get Buyers Survey code; Replace "[MID]"; with your unique MID in codes; Copy/paste code with your unique MID onto your order confirmation page.
More Info: Bizrate