The introduction of Google Seller Ratings is significant because it can increase paid search traffic and click-through rates, and potentially increase conversions due to the visibility of the seller ratings and the inherent trust that is created by their presence. Seller ratings are like a personal referral from other customer about which merchants to purchase products and services from.
Seller ratings can really make your ad stand out from the competitors. The bright colour of star ratings is easily recognised and the bigger size of ads when seller ratings are added can increase your click through rate.
What are Google Seller Ratings?
The Google Seller Rating extension provides user-submitted ratings information about sellers next to their AdWords ads. They are matched to Adwords advertisers’ ads through the domain of the display URL of the ads.
The Seller Rating stars are generally a useful tool for advertisers: they are free, add a visual dimension to ads and, most crucially, enhance the advertisers’ reputations and increase users’ trust in them.
If your ad has an extremely high quality score and shows in the top panel (above natural results), the extension will also display the number of qualified reviews next to the rating.

