Presence becomes a unifying lens for understanding mediated interaction, driving research on telepresence, social presence, and the functional role of media capabilities in group work and learning. Methodologically, scholars blend theoretical modeling, cross-site experiments, and user-centered evaluations to reveal how task demands and affective factors shape media choice and adoption. The convergent emphasis on presence, usability, and collaborative effectiveness helps unify human-computer interaction, information systems, and communication studies around media-mediated collaboration.