1 INTRODUCTION
 Nowadays, managers have at their disposal a wide variety of communication technologies from which to choose. A number of recent studies have reviewed and extended theories of how managers choose a medium for a specific situation.  Nevertheless, current technology can also affect what we communicate, as well as how we communicate it. Thus, the question for designers has become broader: how should technology be designed to make communication more effective by changing not only the medium, but also attributes of the message itself?