Also, somewhat ironically (definitely not coincidentally) it seems that letting people be openly and "legally" pseudonymous like here allows for more careful and thoughtful people to flourish.
On the contrary, those who thrive equally well with real name policies are those who:
- use fake names anyway
- doesn't understand yet or doesn't care that being an a$$hole online has consequences
- are so sure about their opinions or feel so strongly about them that they ignore it
All these exist in pseudonymous forums too, but on open full-name forums they far outweigh thoughtful people in any kind of controversial discussion.