Personal memory assistants, always on life recorders, reputation networks and so on -- the pieces of the participatory panopticon -- will thrust us into a world that is both painful and seductive. It will be a world of knowing that someone may always be recording your actions. It will be a world where official misbehavior will be ever more difficult to hide. It will be a world where your relationships are tested by relentless honesty. It will be a world where you will never worry about forgetting a name, or a number, or a face. It will be a world in which it is difficult or even impossible to hide. It will be a world where you’ll never again lose a fleeting moment of unexpected beauty.