I understand what you're saying, but it's sort of reductive and begging the question to say it's only journalistically-influential people, because in fact Twitt

I understand what you're saying, but it's sort of reductive and begging the question to say it's only journalistically-influential people, because in fact Twitter has minted a new class of influential people. Plus, it has also decreased the distance between celebrities and their followers to an unprecedented level. Sure, "important" is a loaded term, and if you define it as Wall Street does (money), or in terms of Facebook's own KPI (daily active users), then Facebook is far more important. However if you presented the top 1% of viral Facebook posts against the top 1% of viral Tweets, I think you would be hard-pressed to find many people that thought the Facebook posts were more "important". Twitter's problem is that this is very very difficult to quantify, and therefore they get judged by Facebook's chosen KPI, which is frankly nothing but a race to the bottom, because Facebook is taking an unreasonable amount of people's time right now, and there's a way in which the product drives an addictive loop rather than adding any real value.