Duolinguist

Wanting to channel spare minutes into something more productive than "Magic: The Gathering - Puzzle Quest", I downloaded the Duolingo app on my iPad and have begun learning Danish. The free version seems useable, throwing up only a bordered static ad at the end of each lesson that can be quickly X-ed away. It's also fully gameified - letting you earn and gamble points, and collect achievements - meaning there's a chance I'll stick with it longer than I did "holiday" Korean (CD & cheat sheet) or Russian (multiple cassettes & chunky workbook). The lessons are cleverly designed, mixing in plenty of visual clues and testing you've learnt from past errors. Give it a go!