MK> I'll be happy to change my assumptions, but can you name any good reason MK> why they would want to do so?
The Matt theme: restrict oneself from getting mail from any but a few safe people, languages, or whatever. Life goes on in its familiar grey days. But alas, the software knows best. The jidanni theme: open up life to a rainbow of possibilities. New styles, new friends, new colors. Don't let the minor fact that we filter out a tiny part of the spectrum cause us to miss out on new contacts from who knows where. Anyway, currently it's not even like one could just use "--" to obtain "+". And even if it was, our basic user is still looking for his blacklist_locales.