But perhaps highlighting in red the quiz requirements for guests and those who haven't taken it yet might help, and providing the same text and link on the generic permissions error page might help (sorry if there is one already, didn't want to make a new account to test). Otherwise these WTF posts should go in a locked hall of shame and the accounts banned.
Also, I have noticed that many people provide logs in code or quote tags, or quote long posts. Would it be possible to default to bbcode codebox style layout (add scrollbar) or auto-collapse large text blocks (>10 lines) with an option to force full display?
Keep up the good work, many thanks!