human.json
A proposed standard for asserting that the content of a site is human-made, not AI-made. I'm not convinced, and it doesnt seem too far removed from the much-older humans.txt, but it's also lightweight and seems well-meaning.
Markdown, llms.txt and AI crawlers
I'm seeing the rise of a "serve Markdown when asked" and "you need llms.txt" movement, driven by the idea that LLMs/AI is the new source of visits. While there might be some merit to this idea, what does seem to be interesting is that the facts of what's happening when you provide those things don't seem to match the claims.