“ So did Twitter cause El Tahawy’s release? As with the original demonstrations in Egypt that led to the removal of its dictatorial president, there’s bound to be debate about what role social media played. But as Tufekci has noted in her research about those demonstrations, one of the crucial factors Twitter and Facebook bring to the table during such events is the ability to spread the information broadly in a short space of time, which can in turn help convince others that taking action is worthwhile”
Source: gigaom.com