I used to use memrise, and enjoyed it, especially the gamification and the ability to put your own mnemonics in as well as see what images others used. But when they changed to a garden metaphor I lost track of what their algorithm was doing and went back to more traditional flashcardexchange.com mostly. I'll take another look though.
We added the garden narrative in Spring 2011. The goal was to wrap our internal model of the state of your memories in a visual metaphor to make it clearer and more vivid for you as a learner.
We've improved the underlying algorithms a lot since then. Do let us know if you still find the garden confusing.
