An SEO experiment has gone viral this week after Jon Goodey deliberately published a LinkedIn article containing an AI hallucination about a non-existent Google core update — and watched it rank on the first page of Google Search within days.
The post was designed to test how quickly misinformation spreads across the SEO community.
Goodey revealed that not only did his fabricated “March 2026 Core Update” article rank in classic search results, but Google’s own AI Overviews feature picked up the false information and presented it as confirmed fact to users.
Several websites quickly published detailed follow-up pieces treating the fake update as real, complete with invented details about “Gemini 4.0 Semantic Filters” and “Information Gain metrics.”
The incident has reignited industry debate about Google’s inability to fact-check its own search results — and the SEO community’s tendency to amplify unverified algorithm update chatter.
Reputable outlets like Search Engine Journal and Search Engine Land reportedly declined to cover the fabricated story.
For affiliate marketers and content publishers, the takeaway is clear: always verify algorithm update claims through official Google channels before reacting to industry noise.
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