This should be a part of education. Maybe it is already in some parts of Europe that are more sensitive with privay breaches than US (France? Germany?).

Anyway, I live very far from my youngest brother, and have only few occasion to chat with him. Last time I felt the need to check his awareness of the matter (he is on Facebook and has the right age to share pics of drunk friends), and was happy to hear that he was under a pseudo and was using carefully the privacy features.