I was waiting for Gunther's response, but maybe he was waiting for mine!
I'll just embellish Simon's response by saying that the category headings are intended to direct you to the purpose and use of each category, and a lot of posts and replies in each category seem to ignore that direction.
Gunther mentioned my 'sticky' post entitled No English?, which has been there for a good couple of years. In all that time I have never seen anyone post in a non-English language and ask for translation (I think there might have been one post in German, but the poster - IIRC - provided their own translation!). I have seen a number of brave attempts at English, and responses along the lines of " Sorry ... what?"
None of Sparx employees are likely to deny that a FAQ board would be useful, but such a board would require some possibly complicated and/or lengthy instructions for use and, as Simon points out, a lot of people don't seem to be able to apply the existing guidelines.
Consider that an FAQ would be at least a de facto 'sticky note', but once you exceed, say, ten posts the 'stickiness' is no longer an advantage. Also, how do you organize the posts - would topics such as "The role of Sparx Employees on the Forum" be intermingled with topics such as "What is this red triangle?", or would we have a set of FAQ boards with further directions on which one to check for what category of information?
I don't think that such 'problems' would be hard to overcome, but we could put quite a lot of effort into setting things up and still have people ignoring/not looking for/not finding the information.
I'd have to say that I find the same thing with the Help - people asking "How? What?" or saying "Gosh, I'd never have found that" when the information is available, indexed, cross-referenced and fully labelled in the Help. One of the things I like about Geert is the frequency with which he says "Have you looked at the Help topic called 'Exactly the information you asked for'?" Look, the Help is far from perfect, but it isn't TOTALLY impossible to use!