Miller is a leading figure in innovation in journalism, especially in transparency, trust and data-driven journalism. He delivered the U.S. Army Creekmore Lecture in 2007, and has taught at the University of Southern California, Columbia University, Stanford University, the University of California at Berkeley and the College of Charleston. He spent a year at Stanford University as a Knight Fellow, studying transparency and new models of journalism. Miller has served as treasurer and board member of Investigative Reporters and Editors, or the IRE, the nation's largest organization of investigative journalists.