Is a dangerous thing.
We have the power to broadcast anything and everything to the world at the click of a button, but how much thought goes into something that anyone, anywhere can see and be affected by? How much does that promote a fire-and-forget kind of media culture where consequence and responsibility, even personal restraint comes second to whatever it is one might want to say, no matter how insignificant?
Printing, publishing used to be a laborious, time-consuming process; a barrier to the spread of knowledge.
But not everything in your head is knowledge. A lot of it is trash, and there's a lot more of it floating around right now than ever before.