David Weinberger is a senior researcher at Harvard’s Berkman Center for Internet and Society and is co-director of the Harvard Library Innovation Lab. He has written several books, primarily about the effect of the Internet on ideas. His latest book, Too Big to Know, looks at the networking of knowledge and expertise. He is a co-author of The Cluetrain Manifesto and is the author of Small Pieces Loosely Joined and Everything Is Miscellaneous. Weinberger has been a marketing adviser to high-tech companies and adviser to several presidential campaigns. He was recently a Franklin fellow at the US State Department.