My favourite section is the Onyx Boox subforum, I have found a lot of useful information there. (Thanks Booxtor for your hard work!)
I can't really think of any important improvement I would like to see. The only, very minor thing that comes to mind, is to give us the ability to load a dark skin for the forums (black background and green, white or yellow text).
Thanks for the giveaway and happy 10th Birthday, MobileRead!