Parasite SEO is publishing content on a high-authority third-party domain in order to rank using that domain's authority rather than your own. Google's site reputation abuse policy targets the version of this done at scale for commercial gain.
Why Parasite SEO matters for SEO
It is worth understanding because it explains competitor results that seem impossible, and because Google has acted against it directly. Legitimate contribution to a strong publication and parasite SEO differ in intent and scale rather than in mechanics.
Pro tip on Parasite SEO
Treat it as a risk decision rather than a tactic. Sites hosting third-party commercial content at scale have been penalised, which means the risk falls on the host as well as the publisher.
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CrawlRaven audits your own domain rather than borrowed ones, which is the only authority you keep.
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