Thomas Holt, Michigan State University (IMAGE) Michigan State University Caption Thomas Holt, assistant professor of criminal justice at Michigan State University, says the Internet has spawned a virtual subculture of "johns" who share information electronically about prostitution. Credit Michigan State University 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.