AI assistants are becoming a referral channel whether sites prepare for it or not. People ask ChatGPT, Claude and Perplexity for recommendations, and those assistants read the web to answer. Which raises a question almost nobody is checking: can they actually read YOUR site? There are three mundane, checkable things that decide it. The three checks llms.txt. A plain-text file at yoursite.com/llms.txt that tells AI systems what your site is and where the important content lives, like rob...