You know the test centers are great for something that is broke. They are not great for exploits. In fact I would argue people go to the test center to find exploits. How about giving out unique gifts 1 of a kind for people that turn in exploits? I bet someone would love to get a unique plate set for turning in the book exploit. The greatest rewards would come for discoveries on the test center. And don't make it so mysterious. Have people post exploits on test, where they can all be read, and seen in order of discovery. The top dog gets the reward.