This paper is an attempt to bring forth, analyse and compare different aspects in terms of informal communication in the workplace. It focuses in the knowledge shared within the informal communication network which is considered a significant factor for an organization's internal and external progress. It is a study on literature, which aims to link the literature findings with an organisation that seeks to improve its workplace communication and get advantage of the knowledge shared and the collaborated information. There is an effort to identify whether the adoption and implementation of Communities of Practice, as a knowledge tool, could be succeeded. Thus, cultivation of Communities of Practice is expected to influence and turn the informal network to an added-value for the organization. Furthermore, such an innovative approach would capitalise the spare knowledge of the organisation and improve its status in the knowledge society creating new standards and valuing the daily routine. The synchronised knowledge, if shared and administered properly, may create opportunities and cope with the uncertainty especially in crisis situations.