CMC - Computer Mediated Communication is one of the catchwords of modern society. The importance of the Internet grows dramatically from year to year in more or less all disciplines. This volume contains the papers (12 contributions in English and 6 in German) read at an international meeting of the IADA (International Association for Dialogue Analysis, Bologna) in Erlangen, April 2-3, 1998. There were two sections at the conference, one dealt with the new means of electronic communication, mainly with E-Mail communication and with Internet Relay Chat (IRC), the other, more traditional, dealt with dialogues on television and the radio, or with specific aspects of Mass Media communication.