According to Subramanian (2006), informal communication is called grapevine. A further research made by Crampton et al., (1998) who examined the grapevine activity a little earlier concluded that it is an inevitable part of the organization. In addition they have researched the factors that influence it revealing the idea of the existence of an informal communication network. The interesting part of this study was that the authors investigated whether this network could be controlled or not by management