Today we have access to an almost inconceivably vast amount of information, from sources that are increasingly portable, accessible, and interactive. The Internet and the explosion of digital media content have made more information available from more sources to more people than at any other time in human history. Digital Media, Youth, and Credibility, edited by Miriam J. Metzger and Andrew J. Flanagin, addresses the issue of credibility—the objective and subjective components that make information believable—in the contemporary media environment.