I read a lot of blog posts about Firefox and one of the common complaints I'm seeing is that Firefox's spellchecker doesn't recognize certain words. What doesn't seem obvious to many people complaining about this is how easy it is to add words to the dictionary. It leads me to wonder if those people might also be missing the spelling suggestion feature. Both are available when you right-click on the mis-spelled or unrecognized word.
Maybe we need to investigate this UI some. It doesn't seem that different to other inline spellchecking features I've used.
update: another tip
