So sites such as bücher.de (I originally had a link here to the site, but HN punycodes that: http://xn--bcher-kva.de/ http://xn--bcher-kva.de/ ) shouldn’t exist

So sites such as bücher.de (I originally had a link here to the site, but HN punycodes that: http://xn--bcher-kva.de/ http://xn--bcher-kva.de/ ) shouldn’t exist? That’s a very america-centric world, it’s like enforcing only US-ASCII on all websites. Most of the world doesn’t speak English, and browsers showing domains punycoded leads to mistrust, especially if it’s a legitimate retailer (the one mentioned above actually added a redirect to a romanized version of the URL due to that)