Spell Check in Your Browser

With increasing use of the browser for anything and everything, it's all too easy to make spelling errors even if you're a competent speller (which I'm not!). e.g. Firefox and Chrome have spell checkers, invaluable for a dyslexic like me! https://addons.mozilla.org/en-US/firefox/language-tools/ and http://support.google.com/chrome/bin/answer.py?hl=en&answer=95604