A key term in 21st Century communication, however, is convergence. Not only are media and technology converging with each other to produce new means of communicating, but individuals are increasingly using both new and existing communication tools to create new forms of communication. This convergence forces the various "camps" within the communication discipline to draw upon each other\'s theories and research methods to keep up with explaining the rapidly changing communication environment. This convergence of ideas and theories provides a space to challenge conventional ways of thinking about the communication discipline, and that\'s the goal of the SAGE 21st Century Reference Series volumes on Communication. General Editor William F. Eadie has sought to honor the diversity of the study of communication but also integrate that diversity into a coherent form, dividing communication study into four basic properties: processes, forms and types of communication, characteristics to consider in creating messages, and relationships between communicators.