Many merchants have asked how they establish seller ratings for the listings on Google Product Search so I thought I’d take a moment to explain.

Merchant seller ratings on Google Product Search are collected from numerous sources including Epinions, Google Checkout, Mr. Rebates, Pricegrabber, ResellerRatings, Bizrate/Shopzilla, and a few others. These sites collect ratings via post order surveys, or email follow ups, or open contribution by shoppers.  Take note that some of the other shopping engines ratings will be shared with Google so it makes sense to implement the post checkout pop up surveys. If you offer Google Checkout then you’re in luck because becuase Google will send out an email to customers automatically to share their rate their experience.

Based on our experience, there is no setting that can be configured, or request that can be made to get your reviews populated. It just takes time for Google to collect and gather reviews from these 3rd party sources and then display them. Even if Google has several ratings collected, that may not be enough to get them displayed right away and you’ll have to wait until mass updates are made to their system.  This is from Google Checkout Merchant Help section about ratings and reviews, “Google Checkout reviews are also displayed on Google Product Search results. Please note, reviews displayed here aren’t added in real-time. As a result, you may notice a delay between receiving a new review and its addition to your rating in Google Product Search results.” I also found another help article mentioning “New reviews can take up to ten days to appear in Product Search.”