> Computers are used in more than the US and Canada
Even if you speak US (or Canadian) English exclusively, there are still some words that are just impossible to spell correctly in pure ASCII, e.g. résumé, café etc.
“correctly”. I don’t consider it “incorrect” English when someone writes “cafe” or “resume”. It seems to me a little bit pædantic to insist that those words must have the accent marks in order to be correct (when using them in English).