Based on this post: Encouraging users to create an account (and keep it), and the fact that you need to create an account to ask questions on SO, now, after some time passed, did it really help?
Are users keeping their accounts and improving "their etiquette"?
Is it just me or, instead of having rubbish questions or "hit and runs" because of unregistered users, we now have rubbish questions or "hit and runs" because of registered (and then abandoned) users?
What is the improvement now after aprox. 1 year passed?