Have you heard of the website lang-8?

Tweet

Hi, there. Have you ever heard of this website named Lang-8? Wikipedia says: Lang-8 is a language exchange social networking website. It's slogan is "Let's share our language and culture". At there, you can write in a language you want, and people can read your posts and point out your mistakes. I think it's a pretty good website for learning a foreign language. What do you think?