Sun Mar 04, 2012 1:56 pm by K2700
It is perfectly fine to speak another language in world chat.
However, there is a courtesy aspect to this. If it is just you and your friend talking in wc in a different language, it is appreciated that you take it to PM.
It's nice to do this not only because everyone doesn't know what your saying, but because the experts on your server have to translate everything you say (if they don't know the language) to make sure your not breaking any rules. This can become very tedious as the expert to exit the app, translate, then re-enter for every message you post.