This document discusses citizen journalism, which refers to ordinary people contributing news and information online through blogs, social media, photos, and videos. The rise of citizen journalism corresponds with new communication technologies enabling public reporting of events. Examples highlighted include Twitter updates from the 2009 Iranian protests and from witnesses of a plane landing in the Hudson River. While citizen journalism increases the speed, range of sources, and personal perspectives on events, it also poses risks of reducing quality and reliability if media relies too heavily on non-professional content. The document argues citizen journalism will continue to both influence and collaborate with traditional media.