🔥 SEOs Diners Club #227 :Blocking AI Agents Is Becoming the New SEO Mistake. John Mueller Says Locking the Door While Gemini Browses the Web on Your Behalf Has a Cost
This week we dig into John Mueller's critical comment on agentic browsers. AI agents like Gemini can now browse the web and complete tasks on a user's behalf. Mueller says most quality principles stay the same, but a new basic is coming: don't blindly block agentic browsers. So "a site useful for humans is useful for agents too," but if you won't let the agent through the door, you make yourself invisible. This points the same way as last week's Amazon agent ads and Google's entity patent. Plus Google's June 2026 spam update (AI manipulation now in scope), the LLM patent that says "teach AI who you are," SimilarWeb's research on how a ChatGPT recommendation drives branded search, and how AI website builders like Manus are automating SEO.