I'm not usually bothering with leaving comments on products I use, but this well deserves some notes. I use it for language learning and exam prep. I love the fact that images can be attached, I do so with screenshots for formulas and graphs that make memorising easier for me.
The program is very intuitive and easy to use.
I also like the feature that card decks can be shared with other users. Not that I needed it so far, but I like the idea that not only is the program itself shareware, but so is the content put together by the users.
Well done!