Dan Gillmor is a noted technology writer and former columnist for the San Jose Mercury News. He was one of the leading chroniclers of the Silicon Valley dot com boom and its subsequent bust. Gillmor is also the author of a popular weblog covering technology news and the Northern California technology business sector, criticizing copyright holders' exercise of their rights, and commenting on politics from a frequently left-wing perspective.
Gillmor worked at the Detroit Free Press and the Kansas City Times before moving to the San Jose Mercury News in 1994. He has since left the Mercury News on January 2005 to, 'work on a grassroots journalism project' (more details from the Dan Gillmor on Grassroots Journalism, Etc. blog).
He is also the author of a book, We the Media, published in August 2004, chronicling how the Internet is helping independent journalists combat the consolidation of traditional media. He has released the book under a Creative Commons license.