Yeah, that's great but.
Well Maybe I am not the best reviewer, 70%, but it would help me if the game told me which answers I got wrong. If you want it to be an educational tool for reviewers you should set it up so that it tells them what they got wrong and why it is wrong.
All in all, it is pretty inovative and should be a tool employed everywhere as part of the registration process to public sites like this. I like it! Some think you should make it more confusing for gamers, but as an educational tool, keepin' it simple like this is perfect. Great graphs too!