Dave Karpf is an Assistant Professor of Political Communication at Rutgers University. His research explores the Internet’s effect on American political organizing, with a particular focus on the new generation of advocacy organizations like MoveOn.org, Democracy for America, and the DailyKos blogging community. Karpf also has firsthand experience with political advocacy, having served as the National Director of the Sierra Student Coalition in 1999 and serving on the Sierra Club’s Board of Directors from 2004-2010. His research has been published in the Journal of Information Technology and Politics, Policy & Internet, and Information, Communication and Society. His first book, The MoveOn Effect: The Unexpected Transformation of American Political Advocacy, has just been published in May 2012 (Oxford University Press. He tweets at @davekarpf, and his research can be found at www.davidkarpf.com and www.shoutingloudly.com.