Well, can we at least safely say that those of us using a WYSIWYG Editor are producing content that is typo free?
I don't see it mentioned yet in the thread but spellcheck will catch few if any cases where the typo is a valid word. I see this fairly often in my local newspaper which seems to have given up on proofreading now that they have a computer to do it for them. I almost never see invalid words; I frequently see word A where they obviously intended word B.
BTW, what ever happened to true grammar checkers? I ran articles through an old MS-DOS one about 15 years ago, but they never really caught on. Are they ready for prime time and worth owning?