David Weinberger is the co-author of the international bestseller "The Cluetrain Manifesto" and the author of "Small Pieces Loosely Joined". A fellow at Harvard University, Weinberger writes for such publications as "Wired" and the "Harvard Business Review" and is a frequent commentator for NPR s "All Things Considered". In 1994, he founded Evident Marketing, a strategic marketing firm on technology issues. He lives in Boston.