Firefox 2 is awesome no doubt, but it’s really easy to add a word you didn’t want to to the spell check dictionary.

If you do screw up, and you will, just close Firefox and go to:

C:\Documents and Settings\ACCOUNT\Application Data\Mozilla\Firefox\Profiles\SOMETHING.default

(fix as appropriate) and find persdict.dat. Each line in the file is one word added to the dictionary so just delete your mistake, save, and start Firefox back up. Easy.

(linkage)