I am the copy chief for a business-tech magazine--400,000 or so subscribers.
Even so, there are certain words I always, always have to double-check that I'm spelling correctly. One of them is scissor. Why is there a c in there? Why aren't there any zs? It just looks wrong.
I think we should all learn Esperanto--the artificial language with standardized spelling and pronunciation--if only because that way, we wouldn't need subtitles to appreciate the William Shatner film Incubus.