> Always make it ridiculously easy to switch to english, always. In many cases you probably should make english the default even though you have a localized version (this is especially true for web sites, few things are as annoying as having to change language again and again and again

Yeah, like google.com. Whatever I do it just does not seem to be possible to permanently set US version of google.com as default, not local version. Especially frustrating when traveling to other countries and getting it in language you do not understand.