Markos Moulitsas Zuniga is founder and publisher of Daily Kos, the largest progressive community blog in the United States. Named "the single most successful entrepreneur of the progressive movement" by New York Times magazine writer and author Matt Bai, Moulitsas is also co-author of Crashing the Gate: Netroots, Grassroots, and the Rise of People-Powered Politics and author of Taking On the System: Rules for Radical Change in a Digital Era. He is also a contributing columnist to Newsweek Magazine and a weekly columnist at The Hill newspaper. He was named one of the 100 Most Influential Hispanics in the world by People en Espanol, clocked in at third in Forbe's Web Celeb 25 rankings, and was listed 26th in PC World's list of the "Most Important People on the Web." In addition to running Kos Media, LLC, which publishes Daily Kos, Moulitsas is also founder of the SB Nation network of sports blogs, and co-founder of Vaster Books. He's an avid pianist and composer.