Gehalgod

crappy language learning software

What exactly are the reasons that you find most language learning software deficient, and how does DuoLingo make up for these shortcomings?

There are already CodeAcademy and Rosetta Code.

EDIT: Link to CodeHS, mentioned in comment below.

That dude's a chick? Oh, no...

Oh right, those. How could I forget?

Yeah, he's one amazing guy alright.