Rated 5 out of 5 stars

Wow now I can stop thinking I'm crazy! I didn't have this installed and the word "isn't" was flagged as misspelled. Well pretty much every contraction I typed was flagged unless I manually added them to the dictionary. So this is helpful. I just wish I could access one more of my old dictionaries as an extension needing an update to work with FF3. Then I'd be having less of a problem with medical words.

This review is for a previous version of the add-on (3.0.3).