Comment Duolingo as actually very good (Score 2) 35
There is a huge backlash against Duolingo, it doesn't really teach anything, it is gimmicky, you can get to the end without being fluent, all of that. It is a pity, it is actually very good now; the long courses, French, Spanish are superb, they incorporate a lot of well established techniques for effective learning in a fairly easy to understand gamified environment; apart from chess which is clearly just for fun, Duolingo seems sincerely committed to a long term goal of producing an effective learning tool. If you finish one of the big courses, you really have learned a lot of the language, productive fluency will always require conversational practice, but it does all the rest of it extremely well. I think there claim that you can reach B2 is fair, conversation aside; I imagine that's on the way.
It would be nice to see them push the very short courses beyond 30; languages like Yiddish, Irish, Navajo and Welsh have smaller populations who want to learn them, but within those populations you have people genuinely committed to learning.