ISIS has been widely credited, perhaps wrongfully, as having a stellar social media strategy. One friend, oddly enough, was even the target of their ire for an ill-placed dog photo with a hashtag they were trying to hack. For hours one afternoon, she was cleaning out and blocking terrorist after terrorist as they shared and reshared her doggy pic, as it went viral across the Middle East for no discernable reason.
At any rate, ISIS is, apparently, the product of the #Selfie generation. Only they haven't, it seems, grasped the concept of the "location services" widely available on social media platforms, which tag your photos with all sorts of metadata including, but not limited to, your exact location. Fortuantely for intelligence gatherers, as ISIS proudly snaps photos of their own smiling mugs without shutting off their GPS, they're providing very accurate data to coalition forces, which are now using ISIS's #selfie habit to blow them to smithereens.
OPSEC isn't the Islamic State group's strong suit.