[argonaut]

I mean, that's exactly what they're talking about. You can't just exclude one of the most impactful topics of global discussion (US politics). The fact of the matter is Twitter has a tremendously disproportionate impact on US politics and US journalism, and by extension world affairs.

[taytus]

Let's say that for some reason POTUS decides to start using facebook instead. Then what? Yes, I'm not denying the impact of those tweets, all I'm saying is that is just only ONE user driving the impact.

[argonaut]

Not just POTUS. You'd also need Congressmen/women, non-profits, journalists, etc.