The problem I have with most language software is they don't take advantage of spaced repetition. http://en.wikipedia.org/wiki/Spaced_repetition http://en.wikip

The problem I have with most language software is they don't take advantage of spaced repetition. http://en.wikipedia.org/wiki/Spaced_repetition http://en.wikipedia.org/wiki/Spaced_repetition I looked at Rosetta Stone a year or two ago, and the best they had was occasionally bringing you back to a previous lesson.