Positive Marijuana Messages on Twitter (AUDIO) Washington University School of Medicine Your browser does not support the audio element. Caption A study of all of the messages sent out on Twitter in the course of one month shows that the "Twitterverse" is a decidedly pro-marijuana place. Researchers at Washington University School of Medicine in St. Louis found that attitudes about marijuana among Twitter users are decidedly pro-pot. Jim dryden reports... Credit Washington University BioMed Radio 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.