I Didn’t Want to Correct Didn’t

With the new versions of Firefox, it has a built in spell checker. Unfortunately it tries to correct words that don’t exist, or you don’t need them to. Look here to see what i mean.

When you right click on a word that is underlined, firefox will try and give you suggestions on how the word can be corrected.
Unfortunately, as you can see, this feature is yet to be perfected.