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More than eleven years after the 9/11 attacks and nearly a decade since the rise of popular online jihadist internet forums, there is strikingly little empirical research on the manner in which jihadist activists use the web to propagate their cause. Whereas researchers and policy analysts have systematically collected and analyzed the primary source material produced by al-Qaeda and its allies, very little work has been done on the conduits through which that information is distributed -- and even to what extent anyone is accessing that propaganda other than counterterrorism analysts.