Even if they didn't post they could've gone to a staff member and complained about it. Or maybe some people who didn't post could use this thread as an opportunity to say so.

Anonymous posting would be abused like heck. I can see it being used to flame people, post porn, and generally do whatever someone would normally be scared into not doing because they know they'd get banned. I don't think anarchy is what we really need. If something is so terrible that someone doesn't want to talk about it without being anonymous, maybe they should be keeping it private to begin with? I don't know.