> Does that mean these whitelistings only apply to pages in a Google subdomain Yes, the top-most left-most box is for choosing where the rules apply, I call it

> Does that mean these whitelistings only apply to pages in a Google subdomain Yes, the top-most left-most box is for choosing where the rules apply, I call it the scope selector. "" = global scope ".example.com" = any web page which sits on 'example.com' or a subdomain of 'example.com' "example.com" = any web page which sits exactly on 'example.com' If multiple scopes exist for a given web page, the most narrow one is used. Also, scopes are really sandboxes, there is no inheritance of rules across scopes (trying to implement this is opening a can of worms both on usability and code-wise).