“…The authors suggest convergence behaviour is spontaneous and informal as well as taking the form of movement of people, messages and supplies towards disaster areas. From our review, the year 2014 appeared to be a year with highest publications whose central themes revolved around crowdsourcing (Boughzala and Vreede, 2014;Liu, 2014; Poblet, Garca-Cuesta and Casanovas, 2014) on the one hand and understanding digital volunteers, their uses as well as barriers of coordinating their work with emergency management organisation (Van Gorp, 2014;Hiltz, Kushama and Plotnick, 2014;Jung and Moro, 2014;Jung and Park, 2014;Panagiotopoulos, Bigdeli and Sams, 2014). Our guess is, these themes become more pronounced because of the near maturity of social media in the disaster research field.…”