Just to let you know I've been making changes to the forums.
The idea that every single topic required its own board just read as so user unfriendly - and users responded by posting specific questions on the generic boards instead of specific ones.
Looking around, forums that have large generic categories that are busy seems to work better that having discussions split across lots of small niche topic boards.
So I've now moved all of the posts out from the niche subforums and moved them all to the generic forums.
So hopefully that means the Internet Business forums are now easier and simpler to use.