The rule isn't actually stated that way, which makes it all the worse. I'm just inferring it from the way people have been threatened with banning for such innocuous activities as asking publicly whether a particular user has been banned or not.

I find fora vary enormously in how much effluent they attract. This one really strikes as one of the more self-regulating. It's less stemming flamewars or banning trolls and more just deleting spam and splitting threads. There could be a lot of nastiness going on that I never see, but I'm very active there so I doubt it.