CTR De-duplication Display Guidelines 
Single Grain
JUNE 28, 2019
Group A sees your standard page with a 150-word product description; Group B is redirected to a duplicate of the page with a 400-word product description. It’s usually an if/then statement, such as: “If my meta descriptions include a power word, then my organic CTR will increase”. “If In fact, Etsy did an SEO test similar to this.
seo.co
OCTOBER 4, 2020
Otherwise, you’ll run the risk of search bots getting confused; they may see two versions of your site and register them as duplicates, or they may search for nonexistent pages, or they may even rob you of your domain authority entirely—like what happened to Toys R Us in a major SEO blunder back in 2014. Display user reviews on-site.
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