I played a new quiz today and noticed something. Right above the box that gives one's current point level was this statement: "You earned 30 bonus points due to the difficulty level of this quiz."
I may have noticed this in other quizzes, but I can't remember which ones. In this case, though, it's a brand-new quiz and has no difficulty rating yet.
So, what exactly triggers this nice little bonus?
Speak less than you know; have more than you show.