BuddyPress.org

We need a “global language filter” for all content, depending on what the user set as his preferred language in the wp-admin.

WordPress.com has such an language filter. You can choose “preferred language” and will be redirected to f.i. to de.wordpress.com (only content of people who set up their language and blog-language to german) or es.wordpress.com (only spanish).

Anyone also interested?

@Grosbouff: Maybe we should add this feature request as an official ticket?