The Invisible AI Crawler Block
How Sofitel Legend Metropole Hanoi passed every SEO test yet sent GPTBot, ClaudeBot and Googlebot into an endless 301 loop through one proxy header.
Case Studies
Evidence-first investigations into how real websites succeed or fail with AI crawlers and search engines. Every finding is reproducible with the commands shown, every subject is named so the evidence can be checked, and each study ships as a page and a PDF in English and Vietnamese. New to the topic? Start with the blog.