I am a long time reader of the forums, and I have yet to sign up for flash cards.
I contribute in threads, and I am really active, but I have not made that step yet.

Why?

Because I want to see a sample of maybe 5 flash cards in the 3 most popular exams before I do. I am like that. I want to see thing before buying.

I imagine I am not the only one.

Cost? this demo section should not cost that mutch to create since the material already exists.

Downside? I highly doubt 5 flash cards for 3 exams would cause concerns for pirates or plagiarism

Just giving you free feedback.