A related question that popped up recently (but has been lingering around for a while), is if a Unicode-capable program, should also support rtl-languages like Chinese, Japanese, Arabic etc., now that these character-sets are supported?
Writing software that is available, and could be used, globally, I might have to educate myself in these features and languages, just to 'support' the roughly 1/3 part of the world that uses their language that way...