A large majority of the stuff I write is written online via Firefox or in emails via Thunderbird.
I use the English and German spell-checking feature a lot and I find the spell-checking works to my satisfaction.
I also write text using various flavors of text editors on windows. It would be great to use the same dictionary in my local editor as I use with my Mozilla apps, as that would reduce a lot of duplicated dictionary maintenance (adding the same word 3 times over) and I also found the Mozilla dictionary to work slightly better than then one in my texteditor. (I use PSPad atm. for simple text files / TeXnicCenter for LaTeX editing.)
So, is it possible to use my Mozilla dictionaries in my text editor (feel free to propose one that supports that)?