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SEO co-citation was a hot topic many years ago as Google introduced anti-spam updates geared toward devaluing links from poor-quality blog networks. More recent thought of co-citation have shifted the focus away from link juice and toward the words used around links.

co-citation refers to the process of link building without actual links. Unlike anchor text, where actual links were embedded in words or phrases, co-citation does not necessarily have to involve actual outgoing links to your website or blog.