Re: RE: As a never-signed up non member....
" I know that some of my real "friends" have tagged me in pictures, mentioned me in events and discussed me in comments.
Now because I don't have an account, I can't manage or "untag" this stuff, even though it's information about me that's in the (semi) public domain, even before you start to look at advertising data or whatever."
If you don't have a FB account then you cannot be "tagged" as that is (usually) just a live link to an existing FB account (ie the one you don't have and therefore it doesn't exist).
So, it sounds like you might just have been "named" on some pages...and possibly your image might have been linked to your name on a photo or two...but that's about it.