Speaking of which, you probably want to work on dealing with card sets. Search works...by some definition of "works", but it looks like things are getting a bit out of hand with repetitive sets. One of the cool things about Supermemo and imitators is that there are big, maintained sets for a lot of common tasks. You might want to make a "Featured Sets" page, that gives props to the folks who make awesome sets. Allowing folks to rate sets might also be cool, since quality varies so wildly...but, be careful not to clutter up the page too much. It's nice and clean right now.
I agree. I am happy to have the problem. I am thinking of some sort of "Flashcard-Rank" that rates the quality of the card sets by using metrics such as number of times studied, number of users who have saved the set, more than X number of cards and maybe a simple user rating system.
The "featured card set" on the home page was a start of the "Featured Sets" idea. That was ok when there were less sets to choose from. But, yes, it is time to expand it now. Good examples and how-tos can really help.
