Most forums I visit have an Archive section all of it's own. They are usually locked so can't be added to and admin and mods shove stuff in there that hasn't been posted on after a certain amount of time (6 months, 1 year). Yes everything does end up under one header but nothing is lost.
I also mentioned a few months ago that I hate the fact that there is only Posts Since Last Visit. There should at least be a Posts in the Last 24 hours. I'm often interrupted and don't finish reading the newest posts and there is no way I'm trawling through the whole forum looking for them.
I've noticed too that when you click a header, everything collapses except that header. It's usually the other way around so that you keep open only the areas you want to see. It's also interesting that the only thing actually left is 'Forum'. There should really be a minimum of three. Technical (including forum rules and etiquette), Sewing and Quilting (the stitchy part) and Over the Quilt Room Table (Chat, fun and real life stuff). After this is could be Archive, only accessible for members to view, not add to.
Technical:
Rules and Etiquette (These have to be here)
Guides for New Members (Pointers to areas of interest)
Hitches and Glitches (Help!)
Sewing and Quilting:
Beginners
Hand Sewing (If I need advice on a type of needle, I can ask here, I don’t need a needle section)
Machine Sewing (Machines are all machines and problems are often similar)
BIG Projects (The BOMs and Dear Jane type groups)
Over the Quilt Room Table
Chit Chat (Life)
Shows (Who’s going where)
Places to Go and Holidays (I think you can guess that one)
Archive