Personally I'm not convinced by those arguments, because

- I think it should be my right to share the details of my work with anyone.

- It's already illegal to discriminate against people because they have cancer, and I don't think that imperfect enforcement of privacy on the internet is going to significantly affect anyone's chances of this happening to them.

- If someone does something and faces consequences for it, I don't think that's a bad thing.

Honestly seeing people's responses here and elsewhere on the internet is kind of a Kafkaesque experience for me because everyone seems so convinced that internet privacy is valuable yet no one seems to actually have thought through their position (no offense to you personally). I guess I can only conclude that my base values differ in this area.