Making Review Rich Results more helpful

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Here is the official announcement from Google regarding the Review Rich Results update and the algorithm update reported in our September 2019 Google Update thread.

Search results that are enhanced by review rich results can be extremely helpful when searching for products or services (the scores and/or “stars” you sometimes see alongside search results).

To make them more helpful and meaningful, we are now introducing algorithmic updates to reviews in rich results. This also addresses some of the invalid or misleading implementations webmasters have flagged to us...

Official Google Webmaster Central Blog: Making Review Rich Results more helpful
September 16, 2019