Duo + FluentU
DuoLingo should team up with FluentU or Yabla. You could spend your lingots on parallel text videos.
One thing conspicuously lacking on Duo is authentic audio material -- i.e., the REAL language. Language is much, much more than the written language of wikipedia, and I need more conversational fluency in my toolbox, which I am forced to get elsewhere right now.
We also have way too many lingots and nothing to spend 'em on. Videos on FluentU, Yabla or Youtube (the "easy languages" channel) are valuable for learners, but I don't much like paying for content (in non-lingot currency, that is). There are also too many such videos that one can feel compelled to jump around a lot--whereas, if I only have a few of them on hand, which I purchase with my now-precious lingots, I will be forced to watch them over and over again to the point of memorization, which very much helps with the listening/speaking side of language-learning.
I do not, of course, know more about the business/profit angle than the good people running this operation, but as a user, I would love to see both concepts integrated into one site. Just a thought.
This is an excellent concept. There are a few elements missing from the overall progression of a language learner here on duolingo. Meaningful content in the form of podcasts or video is certainly missing. Yabla has a great cloze test that falls right in line with the gamification of language learning on this site.