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Hi Lingke! Good feedback from everyone here. I just wanted to be sure to throw into the mix that fact that John Mueller specifically stated last December that Google does not want markup on on-site testimonials: https://productforums.google.com/forum/#!topic/webmasters/wY1vF2RRos4/discussion More on this here: http://www.localsearchforum.com/google-local/26385-say-what-google-says-dont-add-review-markup-your-customer-reviews.html