F our Kinds of Facebook Users 2 (IMAGE) Brigham Young University Caption These are selfies, relationship builders, town criers, and window shoppers. Credit Nate Edwards/BYU Photo 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.