Census Takers (IMAGE) University of Southern California Caption Yuri Pradkin, left, and John Heidemann collaborated on the USC Information Sciences Institute Internet census -- and here point to ISI's position on the census chart. Credit USC Information Sciences Institute Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.