oops! maybe I should have mentioned that somewhere.

All the text descriptions are still stored there too ...
Dave noticed the logo links functionality in another brand of message board and thought it would look better and take up less space, so I reimplemented it on ours. The only bit that doesn't work as you've discovered, is the logos don't provide any indication of which forums have new msgs - it takes an extra click through to see that.
By the by, I'm afraid the gfx are fairly basic, so if anyone wants to update any of the logos with something more in keeping with that particular project, feel free to drop me an email with alternatives and I'll replace them.
Sam.