Perhaps nothing evokes more universal disgust as child pornography. The world of its makers and users is so abhorrent that it is rarely discussed much less studied. Child pornographers have taken advantage of this and are successfully using the new electronic media to exchange their wares without detection or significant sanction. What are the implications of this threat for free speech and a free exchange of ideas on the internet? And how can we stop this illegal activity, which is so repugnant that even the most laissez-faire cyberlibertarians want it stamped out, if we know nothing about it