It was a sad realization for me too. I understand if I posted pictures of an elk with some giant mountain range in the backdrop or some very easily identifiable point, that it would likely be discovered where this elk was killed. It's all speculation how they discovered the location, but here is what I learned... You can use the metadata from photo's to learn a persons name, gps location (depends on your phone settings or camera), date and time of the photo. With that info you can then typically find Facebook, linkedin, youtube etc... then with enough "tips" you can start searching maps to try and figure it all out and align locations with the story... To me it is very sad that someone would go to that great length to find a location, but then again I have heard Rand Newberg talk about people getting info from his hunt through "freedom of information". Sad day... but definitely turn off your phone location info on your photo's before you ever text them out to friends or you might find out that you just sent them the GPS coordinates.