Each country has more or less sufficient disaster management infrastructure consisted of pre-arranged and pre-planned integrity of legislations, stockpiling, human resources etc. Nevertheless, the gap between resource possibility and requirement appears significant time by time. For this reason the volunteer communities seem to be an effective tool to assist regular disaster response agencies. Members of such type of community usually are disseminated in broad areas, less vulnerable by themselves, connected with other members of community on a daily basis, and do not require a regular salary for support.