Q: In ten seconds tell me, what are chronoscrolls?
A: Chronoscrolls are an in-game item we're using to fight gold farming, game account theft, phishing, chat spam, and other criminal behaviors in order to create a better gameplay environment for TERA. Players can trade their excess gold for chronoscrolls and redeem those chronoscrolls to play TERA for free. Other players can buy chronoscrolls and sell them in the game as a way to earn more gold. Both groups of players get what they want, without having to interact with cyber-criminals. By creating a legal market where players trade game gold for game time, we can reduce demand for the illegal trading of game gold for real money, and thereby reduce criminal enterprises. That might be more like a twenty second answer, but I think it hits the key points. Of course, you probably have a lot more questions now!
Greatest Invention of all time.