mozilla/browserid — comment on commit af078ff6df2f2e0034733fb0766c2dc8f2edb867
File:  line 0
By ozten:

The difference between zh_CN and zh_TW is extreme from a cultural point of view.

We've gotten into a lot of trouble for naming the country name in a language switcher "wrong" for one of these two locales (I forgot the web property that happened on).