Quote from Husti
Hi! I also was just wondering why you can't add publishers aside english/oriental languages ones. I can read in Spanish, French and Italian, so it'd be really useful to me if I could check if a certain manga is licensed in one of these languages.
Not an admin, but I'm pretty sure it's because this site is an English focused database. That's why scanlation releases in non-English is not allowed. I doubt the admins will change their stance on that. The reason why publishers from certain Asian languages are allowed is because they are usually the original publisher.