This may not be the same thing you were thinking. But you are always welcome to chat in the Japanese chat thread. That's probably the thread where you find the most native speakers, including myself.
http://www.japanforum.com/forum/japa...haracters.html
You can make mistakes and have people correct them. That would be something you might not be able to do with someone at your own level because they may not always spot your little mistakes. It's a very casual thread where people talk about random stuff.
Good luck!