I know that it's not popular here but I appreciate the anonymity of 4chan. With no user ids no one is harvesting karma/reputation and so you get to read some of what to me are truly alien perspectives. I'm normally pretty positive about people (some would call me naive) but 4chan lets me see how there are some true monsters out there and that I could be interacting with them in real life. But yeah, I understand what Greece is trying to do - I just don't think it'll be possible to enforce it.
This whole concept of usernames instead of real names creates something I've lost complete trust in. With 4chan, you know exactly what you are getting. But with say Reddit, people game the system creating fake accounts that pretend to be real people having ideas and opinions that aren't paid for. It's getting hard to find places where this in-between state (usernames) aren't destroying the platform.