Social Message (image) University of California - San Diego Caption An example of the social "get out the vote" message shown to more than 60 million Facebook users on US Election Day 2010. Other users in the study saw an informational message - identical in all respects except for pictures of friends. A control group received no Election Day message from Facebook at all. Credit Courtesy James Fowler, UC San Diego Usage Restrictions With study and proper credit 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.