http://www.facebook.com/questions/419654551412053
I'm intrigued by Duolingo. Some people hate it, others love it. However in order for me to try it, they need to implement a Chinese version. We might not get the 400 votes needed to surpass Japanese, but surely we can get the 20 or so votes to beat Italian and be second on the list.
(PS. If you've never heard of Duolingo and are interested watch this TED talk: http://www.ted.com/talks/luis_von_ahn_massive_scale_online_collaboration.html )