[viseztrance]

Very nice. It feels so fast compared to other server-side solutions. You should definitely extend it for katakana as well.

[Youpinadi]

I'm glad you like it! Actually I can extend it to pretty anything, from katakana to learning capitals or even words of any language. Here is how the dictionary works (for the moment): http://youpinadi.github.com/jlearn/js/hiragana.js If i get some pull requests with other cards deck, i would be glad to integrate them in the interface!