"This study highlights the recent phenomenon of online social movements in Vietnam having some characteristics of the ‘horizontal networks’ and ‘mass self-communication’ conceptualised by theorist Manuel Castells. My arguments are developed on the basis of an analysis of original research interviews with media professionals and using a case study approach exploring the dynamism of internet users who began networking to voice their public feelings on social issues. This article suggests that online social movements in Vietnam are in their early stage, and are expected to increase along with the growing influence of the internet and the control of Vietnam’s communist authorities." (Abstract)