In order to include non-english speaker in the community we should add the possiblity to write your post in a specific language. The language should be selected from a drop down list, default language is the language the users browses BeWelcome with. Additionally the languages he speaks (according to his profile) and a "+" if the user wants to write in another language (pop-up with all languages).
On the same time you should be allowed to browse the Forum according to your languages. Default Forum view = all languages, select the languages the user speaks according to his profile on top, and then a alphabetic list of all languages under the top language list
The user should be allowed to choose in his preferences which languages he wants to have displayed in the Forum (multiple choice possible)