Knowledge media systems are special forms of digital media, incorporating computers, software, informatics and communications technology and the internet, in ways that enhance human thinking, creativity, communication, learning, and collaborative sensemaking. Each becomes knowledge media when designed and used explicitly to share and build knowledge. They include the world-wide-web, email, instant messaging, knowledge management systems, digital libraries and data repositories, and a variety of collaborative practices ranging from twitter through audio-conferencing to immersive hypermedia environments. KMD integrates principles of social networks; human-centred design; digital hypermedia; open, transparent, and accessible design; knowledge building; epistemological theory; good information management practices; etc.. This field of research and practice informs an emerging design process for guiding development of knowledge media enabling people to build and share knowledge.