They’re already supposed to be posting in the ‘how-to’ section, I think.
The issue is most of these people, as well as those asking for links, are doing so immediately after registering and either don’t know or couldn’t care less about the correct way to ask.
But yeah, I agree that a stickied thread might be better for visibility. And it’s probably true that people with A/V questions are much more willing to ask their questions in the appropriate place once they know where that is (as opposed to download questions, which will simply be dropped anywhere prefixed with ‘sorry’).