Challenging the notion that digital media render traditional, formal organizations irrelevant, this book offers a new theory of collective action and organizing. Based on extensive surveys and interviews with members of three influential and distinctive organizations in the United States - The American Legion, AARP, and MoveOn - the authors reconceptualize collective action as a phenomenon in which technology enhances people s ability to cross boundaries in order to interact with one another and engage with organizations. By developing a theory of Collective Action Space, Bimber, Flanagin,...