You know on crime dramas, where they scan someone's photo, then the omniscient computer program spits out the name, profile, and history of the person in the photo? Well, that technology is no longer exclusive to law enforcement (or those who play law enforcement personnel on TV). It's now available for free on sites like Face.com, and, soon, on Facebook.com.
The good news, according to Face.com is that you can now locate "lost" photos of yourself online (or photos you didn't know about), and according to Facebook is that you can save time in tagging large groups of photos.
The bad news is that the creepy person who you suspect has been stalking you for several weeks can now simply take a photo of you with his/her camera phone, and upload it to one of these sites, and these sites may provide your name and location (if you haven't protected yourself adequately).
Once more, you're going to need to check all of your privacy settings on any site you've tagged yourself on (especially Twitter and Facebook), and make sure your privacy settings are adjusted with these new "features" in mind. Fore more info, see the FAQ page on Face.com, and "Making Photo Tagging Easier" on Facebook.
Jennifer Pointer (e-mail) is in Tulsa, OK. She promotes a simple, a low-tech approach to effective online profile management, search engine optimization and social networking.