http://www.SkillDuel.net
At SkillDuel.net, you can bet Bitcoins heads-up against other individual users in several different 30-second contests.
Trivia Quiz: Subjects include Science, History, Music, Spelling, and Geography.
Reflex Test: You will be given 3 tests. In each test, when the screen changes from yellow to black, click on the black section.
We are also offering $200 in prizes for the users with the best scores, and another $200 for the people who refer those users.