The robots.txt Mistake That's Killing Your AI Search Visibility

There's a good chance your website is invisible to ChatGPT, Perplexity, and every other AI search engine - and the fix takes about 2 minutes. I've been auditing sites for AI readability for the past year, and the single most common issue I find isn't bad content or missing schema. It's robots.txt blocking AI crawlers entirely. The site owner has no idea. They're optimizing content, writing FAQ pages, adding structured data - and none of it matters because the front door is locked. Here's how to check yours and fix it.