I've come to understand that you can have multiple websites with translations in DW. What I don't understand is how to organise them. For example, I've made a demo for Finnskogen Adventures in Norwegian and English, and I also have a sports whole-sales webshop in Norwegian and English in my DW installation (4 websites, and counting). My Norwegian version of Finnskogen Adventures has named "Norsk" before, and the language layer "English". The same was the case with my sports shop. However, if I manage several websites and they all are named after their language, it will be impossible for me to know which one I'm working on... and so I renamed them to "Finnskogen Adventures no-NB" and "Finnskogen Adventures en-GB". It is now easy to know which website I'm editing.
However, this resulted in a surprisingly change in the front end interface, for my language selector. Now I don't have "norsk" and "English" anymore, but "finnskogen Adventures no-NB" and "Finnskogen Adventures en-GB"! See for yourself.
I don't know if this is a bug, a configuration error or something I did wrong.
Best wishes.