The Judicial Conference Committee on Court Administration and Case Management (CACM) asked the Federal Judicial Center to develop and administer a short survey of district court judges to assess the frequency with which jurors use social media to communicate about cases during trial and deliberation. The survey also sought to identify strategies judges have found to be effective and appropriate in curbing this behavior. This report presents the findings from the survey. A subsequent survey in 2014 also considered attorneys' use of social media.