In systems that allow spaces in the middle of your username, there are some that do the same with the various unicode variations on white space. That's confusin

In systems that allow spaces in the middle of your username, there are some that do the same with the various unicode variations on white space. That's confusing even to people who know what to look for. I have thought someone should compile a mapping of all the visually similar characters in Unicode to one canonical character. Then we can all include a check for potential impersonation in account-creation code.