If anybody wants to follow each other, my username is Justin_Carr
>>78It does all of that. After the beginning it's mostly full sentences, and everything has audio files. In all the languages that are not in beta you can mouse over any word and it'll play the sound for that individual word.
The site is also used to crowdsource documents translations. It's a way of learning extra vocabulary.
I think what makes duolingo so great is it that it makes a game out of language acquisition. It's got scores, levels, a currency, etc.