You are correct those are some reasons why geolocation based settings are bad. I think that the Accept-Language header should be used to select which of multipl

You are correct those are some reasons why geolocation based settings are bad. I think that the Accept-Language header should be used to select which of multiple languages to use. It is OK for the site to include overriding functions though, including URLs and cookies, in case the Accept-Language header is wrong or if you want to link to a specific language for some reason.