I'm fluent in 2 languages, and can read French as well, but when I tried to learn Japanese through Duolingo, it was an epic fail. Beyond some very basic things,

I'm fluent in 2 languages, and can read French as well, but when I tried to learn Japanese through Duolingo, it was an epic fail. Beyond some very basic things, it was pretty clear that not only the developers don't use the service themselves, they also don't really listen to people who do use it in any kind of a consistent fashion.