I'm not on CB but I can only imagine. I have to say, the cool people I've met on MFC make up for the dumb asses. What irritates the shit out of me though is that I have "no anal" on my whiteboard, my room topic, AND my profile and people still PM me DO YOU DO ANAL. ARGH.
I have to admit I do make that stupid error sometimes but mostly with models I am friendly and familiar with. I think it's the reason why though: I become too complacent and I know the menu and rules etc off by heart so if they then change anything, I haven't looked at the subject etc for a long time. But if I am in a new room I will always have a quick scan for the "important" things - most models have a "no this, this or that" so it's best to look but it appears there are far too many lazy dumbasses (which is ironic because in real life I am a lazy ass hahaha)