This hasn't become a real problem yet, but I would like to suggest this to possibly prevent people from posting in the wrong forum sections.
I know that once you click on a certain forum section, there is a detailed description at the top that explains what the forum section is for... However, some people still don't see that and they post in the wrong sections.
A suggestion would be to have the description display once you scroll over the forum section.... (like when you scroll over threads in specific sections)
For example:
If you scroll over 'the lounge' it would say "for all non car related discussion"
If you scroll over 'the soap box' it would say "want to rant? have a blog? here's your soapbox"
etc etc etc with all the forum sections
I believe this not only would help remind people which sections to post in, but it would also prevent a lot of threads to be forced to move which would equal less work for the administrators...
Just an idea!