Duolingo is awesome. I started fairly recently so I'm at 371 XP for Portuguese (Level 5). I personally think it is a great app to have, definitely can help getting your way around a second language. I will probably start seeing how French is in a bit.
Currently Playing: Mario Kart 7, Mario Kart 8, Luigi's Mansion: Dark Moon, The Legend of Zelda: Majora's Mask, Super Smash Bros for Wii U
Predictions:
Super Mario Galaxy will pass Super Mario 64 in total sales CORRECT!