I dunno, I think biker is onto a good thing with hitting the member on the nose with a newspaper approach. If I had to improve upon that, I would ensure that the newspaper used is the Sunday edition, as they hold more pages to effectively get that point across when a member refuses to read and he/she gets belted on the nose with the extra thick, more paged sunday editon. (news of the world) comes to mind.
Personally, I think I admire Bikers approach. And to extend on that where Maddox said it best but I'll change the wording slightly
If your members don't look like this when your log onto your site, your failing as an admin