Alright, so I finally caved and threw in a subforum for all ads over thirty days old. Why? Duplicates. General clutter. Made me twitchy =P

This method allows for a variety of things - it makes it much easier to see if your ad has been posted already, makes the forum itself less cumbersome, and allows for new ads to appear at the top of the list regardless of name for a month while still providing a level of organization afterwards, as opposed to "approved" sections in alphabetical order which are seen to much more promptly.