Ok. So, how many of these are Facebook Ghost profile users?

https://spideroak.com/articles/facebook-shadow-profiles-a-pr...

Oh yeah, you think you're safe because you don't have a Fb account, or closed it when it was popular to do so. Guess again... Your "friends" will keep posting you and they keep building a profile.

Better yet, I suggest people keep their Fb account, and pollute it and lock it down. Don't install the phone apps. Ban their emails with @facebook.com and @fbcdn.com . The long and short; ghost them and don't be the product.