It doesn't unpublish it, but in the long run it sets up Twitter and Facebook as de facto deciders of what type of content is created. To the extent that newspapers rely on social media for traffic, the editorial decisions of those platforms will silently shape the content of those newspapers. It's the “hidden” aspect of this control that worries me.
The difference in the printing press analogy is that if a printing company won't print my poster, I can take it elsewhere.
The difference in the printing press analogy is that if a printing company won't print my poster, I can take it elsewhere.