multiple languages support in a Profile

A user may have only one language but can speak several languages. 

I understand that a user has a preferred language. But he can accept conversations with several language (2 or more). 

Adding those languages will ease the discussion with other contacts who are probably more confortable in other languages. 

Example: I speak native french but can accept discussions in English and German. If the contact can see I am English and German speaker, he will most likely be more engaged to start a discussion with me. 

Kind regards