Maybe a spell check option in the advanced post box would be useful? It may get tricky but if it was aware of some common abbreviations like MB for instance than it would be quite useful. I've seen it on Overclockers so I know it's possible. Just another though
its possible, but I'm not happy with some of the features it does not have, or the way it works. Though soon enough you can install a little plugin which will help you to spellspeck while posting. I have no dates for when this will happen.