You got it almost right… forgot the initial question mark =)
Your post (and the Facebook launch of their service in Spanish) finally made me write some thoughts in my blog (http://la69puntog.blogspot.com/2008/02/human-ne...) about the importance that overcoming language barriers has for a truly “human network” (as the Cisco company calls it).
As I comment there, I see the opening of websites to other languages as one step that allows different groups of humans to have access to the same service. However, as Juan Pablo suggests above, the challenges of attracting and, even more, making these groups to interact and mix with each other remain.