hah, see I am of the opposite opinion. I have seen enough mistakes and ignoring those mistakes hoping no one would notice in my 15+ years here that that seems much the norm to me. But you might be right—taken as a decoration only, they might have considered this good looking. Very curious.
Anyway, thank you for the great comment and glad to hear you will start using the #randomjapan tag. You have a lot of great random photos on your blog—they will be excellent additions!