If you use a GPS-equipped smartphone and/or digital camera, you may be providing the location (latitude and longitude) of where the photograph was taken without knowing you are doing so. Adam Savage, host of the popular TV show "MythBusters", uploaded a photograph of his car on Twitter. Unbeknownst to Savage, geotag information was embedded in the photograph that could be used to learn the exact location of his home.

Story continues here - »www.nytimes.com/2010/08/12/techn···onaltech