Directory of information sources about online communication and the Internet. Known as "The December List" since 1992 and is a collection of information sources about the Internet and computer-mediated communication.
Research paper introduces precise measures of balkanization, and develops a model of individual knowledge profiles and community affiliation. It examines how information technology links separated people, thereby uniting communities, but at the same time fragments interaction and divides groups by leading people to spend more time on special interests.