Since consumer reviews were introduced to Google Adwords and Google Shopping in 2010 they are now playing an important role for advertisers in their campaigns. Recently a few changes were made for the seller ratings (also called consumer reviews or customer reviews).
This September the Google Seller Ratings pages were updated with a new design (see post) and also the option to review sellers through Google Wallet transactions was discontinued ("Reviewing sellers").
A couple of days ago Google announced that the Google Trusted Stores certification program now also connects to AdWords. Merchants participating in the program will be able to gather reviews, which will be displayed on AdWords text ads as well as Product Listing Ads on Google Shopping. It is pointed out that "participating retailers have a free and easy way to earn the ratings"
Example View with Google Trusted Store reviews |