Multilanguage network

Hi all!

I can´t find a plugin to change language from the site interface. Elgg doesn´t even ask the prefered language when registering.

When the recent activity is showed all users appear there, so in an international network it could be a mix of language that wouldn´t help at all.

I was studing Facebook and even when all the people is in the same paltform, you will only see what your contacts writes, share or do, so if you don´t have chineese contacts you won´t never see a letter of chineese, but in Elgg this is not that way.

Is it possible to have the same behavior in Elgg?