Shut the hell up all you people who think Facebook, Twitter, etc. are public utilities!
I do not participate in Facebook, twitter, instagram, snapshit, etc., but I believe they can run their business anyway they want. Oh, I also believe, they can censor or not to their hearts content; or endorse a candidate, or promote positive stories/negative stories on candidates, stories, issues, etc..
You want open-web? Go ahead and use USENET... let the good times roll.
Be smart sheeple.