I have used the site and appreciate it but it currently work for me. There are two things missing:

1) Bulk import functionality. I would like to be able to upload questions/answers from a text file on my computer (tab delimited, csv, etc.)

2) I would like the option to to be able to type in the answer if I know it and have the program judge whether or not I actually know the answer (instead of having to click the "I know it" or "Not sure" buttons). Sometimes, I think I know it but it turns out I really don't.

For item 2, maybe you could have options like this for the learnlets:

Make user enter correct answer before advancing (yes/no)
Time to wait for user's answer (seconds)

Thank you for this comment. We do have

1. text file importing on our list
2. Confirmation you got it right
3. Multiple choice questions and answers

if you think that would help?