Hi,
Welcome to the newly launched Japanese Vocabulary Trainer.
I created this site because I've recently been studying Japanese, had been learning from a couple of different books, and found I wasn't getting anywhere from just trying to get the vocab to stick by reading it many times. So I created this to try to help learning the vocabulary to complement the other study materials I was using.
Well, I'm a programmer at heart, and ended up spending more time writing this than learning the language...

And there is still a very long way to go...
The general idea behind it is that anybody that is logged in can create groups of vocabulary that they can then go on to drill in the practice page. If they add a word to the vocab group that isn't in the dictionary, then it will add it to the dictionary. Anybody can also update words in the dictionary. Is this dangerous? Well, time will tell, but I'm auditing all changes made, so everything should be reversible. I've also added the ability to add pictures to words, I believe that pictures will help by adding context - aiding the recall of words.
I know that I need to make a lot of this more user friendly, I'm getting there, but it's a slow process. If you have any suggestions for this, please make them in the Suggestions / Feedback forum.
Anyway, have a play about, and let me know if there's any problems.
Sam.