Earlier quoted context omitted.
> you put that information on the internet, you have no expectation to privacy That was the expectation until Zuckerberg came along. People were putting tons of stuff on BBSs, intranets, and other stuff 20+ years beforehand because people had the idea of "consent" back then existed: using someones information for a purpose they didn't intend was (and still is) wrong.
Using someone's information for a purpose they didn't intend is wrong? What? This just seems obviously mistaken. I don't agree with that at all. I'm not even sure how to argue about that. Lots of art, science and technology can be considered as "using someone's information for a purpose they didn't intend." It is extremely normal for people to find new uses for things; information is not exempt from this.
Yet you would expect that people won't record your private conversations, and even less play it back to third parties.
Exchanges, of whatever information, whether it is personal stories or administrative data occurs in some kind of trust on what kind use you consent to. Respecting this consent is a social obligation on the receiver end.