[throwaway420]

Sure, out of a population of a billion on Facebook, if even .1% speak their minds that's still a lot of people. That doesn't really negate my point that most people are silenced most of the time.

Also, who those people are is important. The smartest folks who have careers and a social reputation at stake are going to be less likely to contribute. The people who might be more willing to speak their mind on Facebook might not be the sharpest knives in the drawer.

Autism and craziness aside, if you want to discuss real ideas online you go to places like 4chan. You see memes and ideas created there pop up elsewhere on the internet days later.