Tags - Setting Scope & Mechanics

[Asandir]

As the title says, the questions pertain to tags. I've noticed for the free content that is available, Isle of Kandril, We Be Goblins, Streets of Zobeck, they use the Setting Scope tag and then list the title of the book that was built in RW.

Questions:
1) How many people are using tags and the Setting Scope tag?
2) If you are just creating mechanics content, are you using the Setting Scope for the mechanics as well, or are you using another tag or tag type or custom tag types?

I can see using the Setting Scope if you have mechanics that are part of the setting document.

Thanks.

Asandir