Some hi-tech cameras can reveal the precise location of you or your children to the wrong people.http://www.youtube.com/watch?v=N2vARzvWxwY
That can include many DSLR cameras.
I discovered this on Photobucket. If you have a Photobucket account, hover the mouse pointer over a picture. To the right side of the screen you will see an inconspicuous box saying "info". If your pictures contain location information, it will tell you where they were taken. Also Googlemap can take you right to the location of hi-tech photos.