I agree with your tone, but disagree with the conclusions.
Unfortunately, the only people who care about Twitter's recent actions are the nerds.
...
SMTP and POP are protocols, Twitter and Facebook are websites with APIs.
A protocol is literally a standard or convention for communicating. In the case of twitter and facebook, the tools they provide for declaring social networks enables (arguably new) forms of social communication. Comparatively, SMTP, POP, HTTP, etc didn't require social scaffolding, or at least, it was not the central element. Without the social scaffolding, twitter and Facebook are useless; without social scaffolding, SMTP and POP still let me communicate with friends I already know.
(That being said, I would have preferred that Twitter was a distributed and open protocol from the start; however, I'm not going to switch to an open product just because it's open. I want the more accessible and wider cast social network.)