>so, we need to translate the interface... and what about the content?

The translation of the content does not apply. We only translate the interface. Transferring the content would mean to translate 600 messages per day, 10 news, articles, conferences, etc. We don't have justification for that.

Basically, we provide mecanism for users to adjust their account setting to choose the working interface. But, whatever is created by each user remains.