WIRED: “The investigation of Monday’s deadly twin bombings in Boston will rely to an extraordinary extent on crowdsourced surveillance, provided by Marathon spectators’ cellphone photos, Vine videos, and Instagram feeds….There are limits to the crowdsourcing. The data used in the investigation will be crowdsourced. The investigation will not be. A crowdsourced investigation runs a high risk of becoming a witchhunt, as we saw in the Newton shooting spree.”