There was a story not to long ago about BG's using software to locate children using a picture taken off the web. It amazes's me how eager we are to post our guns on line! My close friends are the only ones who get to see mine.
Just make sure that you don't have geolocation turned on when you take the picture with your phone. I always make sure the photos I post have NO image attributes associated (geolocation, type of camera/phone used to take the pic, etc.) aside from the date.