The Internet is changing fast. Facebook for instance allows more then half a billion of people to say what they want. Well, my point of view is that this is not freedom, this is just how fast and better advertising can hit us.
There is another aspect: it's possible to drive many people to believe that something is true or important, while it's not. This means that many people can drive the stock market down (or up, btw) or just make a government take the wrong way. It happens.
But what control can we apply to prevent these behaviors? None. So it's up to us: we should think before publish anything. Just think.