I'll do a quick translation: To be safe, put it everywhere you possibly can
But if you're looking at administrative areas, those won't need it so long as they're password protected (the admin panel in SMF is a good one). By forum software, Yami basically means your users still need to see the ad's when logged in. Again, the admin panel in SMF is a good one; unless they're authorized they should never see that. The board index on the other hand everyone can see, so that should have the ads on it.
You're definitely right on the suspension thing though; I'm pulling my conclusions from the fact that my site's still online right now