Apple's built in spell checker on the Mac is unparalleled. Not only does it integrate with the native dictionary, it also automatically detects and switches languages as you type. Right-clicking on an unfamiliar word brings up the "look up" option which fins the word in the dictionary. It's furthermore smart enough to detect misspelled words which are correct words in another language. I don't know how apple achieved this, it's remarkable. Anyway, Firefox displaces this functionality on the mac with their own dictionary, which although good, is not as good as the native spell checking and dictionary. Is there a way to enable the native dictionary for Firefox on the Mac?