A good measure of cultural fragmentation is how far on average a joke has to travel out of context for it to cause offense When jokes hit a mean free path of one degree on social graph you’ve hit anarchy
Dunno, but not zero. I’ve not personally felt constrained in writing the kinds of funny blog posts or tweets I’ve wanted to. What I think is happening is that some people are gaining and others are being constrained, with net increase in humor. Just not from the same old crowd.