Earlier this month the US Army published an article warning its soldiers that the ubiquitousness of geotagged photographs these days can present a serious security risk, citing a real-world example of something that happened back in 2007:
When a new fleet of helicopters arrived with an aviation unit at a base in Iraq, some Soldiers took pictures on the flightline, he said. From the photos that were uploaded to the Internet, the enemy was able to determine the exact location of the helicopters inside the compound and conduct a mortar attack, destroying four of the AH-64 Apaches.
Officer Kent Grosshans recommends disabling the geotagging feature on your phone (or camera) and double-checking your social media settings to see who you’re sharing location-based info with, regardless of whether you’re an enlisted soldier or a civilian.
Geotagging poses security risks (via John Nack)