Digital photographs can now be taken on pretty much every cell phone and uploaded to computers and the Web with equal ease. Besides images, they contain a slew of extra information, collectively called metadata, that could be used to track you down, newsweek.com reported. GPS-enabled cell phones and cameras mean metadata now includes where and when the photograph was taken, which means if you post frequent JPEGs, RAWs or TIFFs to the Internet, people could well be tracking you by your photos.
Personally speaking, I do consider it a good way to have some information recorded, including when and where the photographs were taken. Because those information can help us recall the pleasant moments unless you won't let others know more about you. But I wanna say if you don't want others track you down , why do you bother uploading to the web. Since you publicize them, then you should not care about it and don't mind it if someone is serious enough to track you down. It's actually your honour to be paid lots of attention. Nowadays in the big information age, there are many other channels to have your personal information let out. It has been researched that the GPS system on Apple 5S is able to record the user's daily route and can automatically rank the places users went according to the frequency of visiting. Some iphone users even don't know their cell phones have such an amazing function. It's of no use to have this function. But the terrible thing is that it will be utilized by some people who have vicious intentions. We all should learn how to protect our privacy.