I have noticed more often than not that people have photos with the full GPS data in them. It is contained in something called EXIF data which also tells about what kind of camera was used to take the photo, f stop, focal length etc.
Some photo sharing sites such as flickr will strip the data. Some such as photobucket are lousy about it. They sometimes strip, they sometimes do not. Facebook and other social media will strip the data but use their own location publishing scheme and you can easily and visibly control this.
I keep a plugin on my web browser to read EXIF data as I hover over an image. I do this because I am a photographer and I like to see what kind of camera gear the photographer has used. (Un)fortunately the plugin has a GPS feature where one click can reveal where the photo was taken. I will not detail how to do this here but it is very easy to do.
This is no big deal if you take a photo in, say, times square or the eiffel tower. It is a big deal if you take a selfie at home, or a photo at work, because bam - you've just given the world your home address or workplace and you may not even know it.
So maybe a suggestion with regard to privacy and posting photos would be in order. You can't make people do stuff but maybe fair warning to people posting photos, maybe as part of the welcome message - strip out the GPS data or turn off the GPS when taking pictures.
On a site like this, you never know who is watching, and who is ready to out you.
Thanks for your time.
