This was the first major field study (in the computer field) of professional people using message and conference systems on the internet and some of the resulting observations on using communication structures to reduce the problem (going back in some cases to early work on Delphi communication structures.) Hiltz, S. R. and Turoff, Murray, (1985), Structuring Computer-Mediated Communication Systems to Avoid Information Overload. Communications of the ACM, 28, 7 (July): 680-689. Reprinted by DATAPRO for Corporate Distribution. -- Distinguished Professor Emeritus Information Systems, NJIT homepage: http://is.njit.edu/turoff