Because of data-mining abilities in this digital age, you may want to be mindful of posting photos of your firearms online with visible serial numbers to deter the creation of a firearms database. Technology advances may enable your gun photos to be archived and aggregated online for searching. While it is unknown if anyone is doing such tracking, it may be wise to ensure your serial numbers don’t show up in your firearms photos. Recently, The Firearm Blog did an experiment on firearm photos after reading an article called “Google and Facebook Are Reading Your License Plates.” The premise was...