I deleted mine 8 years ago, when I saw a tool that could scrape anyone's info, despite the "privacy rules" FB claimed were in effect.
Can we do FB privacy stories?
FB outed my cousin to me as an "Adult Baby Diaper Lover", against his explicit privacy settings.
My cousin apparently had friended many ABDL folks, and set those friendships as "private" so that family (like me) couldn't see them. If I visited his page, I didn't see them listed as his friends. That much was fine.
However, FB would (and still does) routinely show me their "People You May Know" suggestions, filled with ABDL user profiles, and listing my cousin as a "mutual friend". Whaaaat?! Facebook is saying "Hey, all these ABDL people are friends with your cousin, so maybe you should be friends with them too?"
I filed a privacy complaint with FB and had several go-arounds with their gatekeepers.
I was essentially told that:
* A friendship is two distinct directional relations. One is "Cousin --> ABDL Person", and the other is "ABDL Person --> Cousin".
* My cousin's making his friendship private meant that the "Cousin --> ABDL Person" relationship was indeed not divulged to me.
* However, my cousin does not have control of the "ABDL Person --> Cousin" relationship. That relationship belongs to ABDL Person, and ABDL Person didn't set that relationship to Private.
* Thus the "ABDL Person --> Cousin" relationship was fair game to be used to populate my "People You Should Know" suggestions, and also fair game to be used to list Cousin as a mutual-friend between me and ABDL Person.
I repeatedly re-opened the ticket, pointing out that the technical design of the behavior was uninteresting in light of the base fact that FB had outed my cousin as an Adult Baby Diaper Lover against his explicit privacy preference. They didn't care, and essentially blocked me from further interaction with the privacy-reporting system.
No judgement of my cousin here. I just wish FB had kept it as private as he clearly wished it to be, so that I don't have to remember to not-know this thing when we have real-world interactions.