Previously, we could optimize our sites all around a specific group of tightly themed key phrases, build some back links to the information, and contact it each day.  In 2009, Google more refined snippet results by introducing “rich snippets.” Rich snippets serve as a “sneak preview” for listings around the https://addons.prestashop.com/fr/seo-referencement-naturel/31857-seo-automatique-google-rich-snippets-json-ld-open-graph.html