It's true that are other ways to accomplish this, and I'd be glad to have them recommended, but for my money [Ha, it's free!] bmatsuishi's nearly 90 sets of flashcards can't be beat!
Here's the direct link bmatsuishi (sets) The oldest sets are on the first page with the newest, called appropiately enough Newly, on the bottom of page 6. Great stuff!( - :`
I think if you'll try them:{bmatsuishi (sets)}- you'll say with me,