Palabea is (yet) another social network site for language learning. An interesting feature, however, is that you can add photos, videos and documents to your profile in order to present yourself to the community, and you can upload training documents which can be shared with others. It's free to join though I do wonder how these sites plan to make any money. I suspect that once (if) there are enough users, some sort of subscription model will be introduced for access premium features (this is the case with FriendsAbroad). Michelle Gallen has a longer review on her excellent e-learning blog.
