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Geotagging: another promising Homeland Security 2.0 app
By WDavidStephenson | September 10, 2007
USA Today recently did a crisp overview of yet another 
Web 2.0 app. — geotagging (or geocoding) — that I believe has the potential to become equally important for Homeland Security 2.0 because it can contribute to the kind of real-time, location-based information that can be so important in a fast-changing crisis situation.
Geotagging refers to the ability to attach geographic metadata (usually longitude and latitude) to RSS feeds, photos or other Web content. A very basic example is when you upload a video to YouTube, you’re prompted to enter the latitude and longitude where the video was shot, or, if that doesn’t immediately jump to your mind, to input the name of the location, at which point the coordinates are supplied by Google Earth. That way, you can search videos not only by content, but also by locale.
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