Collaboration Via Desktop Videoconferencing: Implications for Technical Communication 
From our case studies of technical communication college students collaborating via desktop videoconferencing (DTV) with high school students, we learned that DTV requires that collaborators manage a great deal more than text on a computer screen. Collaborators reliant on viewing computers as conveyors of text alone must learn new strategies for connecting interpersonally with people viewed on screen. Collaborators must macro-manage technology while they micro-manage dialogue about writing.
Duin, Ann Hill, Linda A. Jorn and Lisa Mason. STC Proceedings (1994). Articles>Collaboration>TC>Online