[rock_hard]

Trust me, if ranking had no value...no product team would bother implementing it.

The reason ranking is used left and right these days is because it makes products dramatically better.

[KozmoNau7]

And they are certainly allowed to do ranking. But they can only do it on non-PII data, on data that has been deliberately made public, and on data which people have consented to its collection and storage with unequivocal opt-in.