Another gentle reminder that Social Media are Media. This is the 5th Estate. If you want to start a Blog, or Vlog, it's pretty much up to the audience to decide whether it's meaningful content, or you suck.
In fact, I'd go so far as to say that traditional (Or if you prefer, "Mainstream") press are getting their asses handed to them on the internet, and slowly becoming obsolete. If you want to make the big bucks, instead of hiring a bunch of reporters, and setting up a studio, the smart investor will just start a site, and encourage people to speak their minds. Like Mark Zuckerberg did, he can just sit back, and let the audience fight over who gets to say what.