Jgill, consider making it a google doc that people have to message you for access to. That way this page you've created doesn't become a guide for what to mark up when shops see them. Just food for thought. Maybe I'm the only one thinking like that. I feel like there's always a little blowback when talks of a "guide" come up, warranted or not.
Definitely appreciate your effort pulling stuff together, don't get me wrong.