Good find!
People are being abused. And on top of it all information about you is collected and structured - even if you have removed your account.
Some "friend" that wants to contact you is enough:
I once started the registration procedure and broke it off because I did not accept the terms.
After that Facebook spammed me with friends that wanted to contact me etc... And I had no functioning account.
I complained about it and demanded that all data about me should be deleted.
Facebook had a routine for that - I only had to register first....
Yeah right - register on a site that has unacceptable terms - Why did they think I broke it off?
I expressed my views to the Norwegian data authorities (Datatilsynet) who have a sensible view on this - and thus are constantly ignored by the government.
And they advised me to complain to Facebook Ireland - and they were not certain what laws would regulate this - The Irish law or the Norwegian.
That is the vacuum in which these companies operate - and they seem to be exploiting it .
In any case my complaints had gotten some attention so I got a mail that my data would be deleted without me providing any more personal data.
I am fairly sure that according to Irish and EU legislation the Irish company Facebook is
not allowed to share the Facebook data with third anonymous parties.