There's a long title for you :D
I've been mulling over having the filter bar/menu (as found on the front deals page) on the left hand side of the forums also. The reasoning is that it would a lot of functionality to the forum where you could quickly do a sort for deals/vouchers/etc. Now the one thing holding me back is that I kind of like a full-width forum and I'm not sure how it would feel if that filter bar was on the left hand side.
What are your thoughts and preferences on this?