Think of it like an echo. If your friend shouts at someone in the real world when others are around, you wouldn't be able to hear it from a mile away, but event

Think of it like an echo. If your friend shouts at someone in the real world when others are around, you wouldn't be able to hear it from a mile away, but eventually you will hear about the fact they did so, either through gossip or some other means. Facebook cuts that extraneous fluff out and just tells you what they said. It is far from a violation of privacy, as you would be able to find that information easily if you went out looking for it in the first place. Especially in the world of health, there is a clear distinction about what is private, public, and confidential/secret. This case very clearly public.