What crude technology is being used to rid people of their Facebook addiction?

An arduino keyboard accessory, called Pavlov Poke, cradles the user’s wrist and shocks him if he spends too long on certain websites, like Facebook. Developed by two PhD candidates as a joke, both students admitted to spending more than 50 hours each week on Facebook, so though not entirely serious, it’s possible the two recognized a real problem. If the shocks don’t work, the system can alert phone operators to call the user and yell at him.