@Sphinx No clue, I don't use those. I've always relied on trying to improve my knowledge manually. English is not my first language.
In fact, I usually turn off spellcheckers whenever I see them, because those red squigly lines distract me. :)
@Sphinx If you want I can respond to some of your posts to correct your English now and then, even if it might not have much to do with the contents of your post?