Many concurrent variables appear to influence people when they interact anonymously, either face-to-face (F2F) or in computer-mediated communications (CMC).This paper presents the results of a small exploratory research, conducted in a medical company in Italy, to investigate how the use of pseudonyms influences CMC behaviours. The study involved 32 newly hired or about-to-be hired graduates. Outcomes from this study show that, in the given organizational context, the use of pseudonyms in CMC produced more exchanges, higher verbosity and greater group collaboration.