Some good comments on geotagging, a very interesting phenomenon that's getting a lot of attention lately. Geotagging basically lets users get information on their mobile devices based on their location.
"The basic technology for geotagging makes sense. It may face an empty room problem right now, but as it gets used, the graffiti and clutter problem becomes a bigger issue. At that point, it's no longer going to be about the technology of geotagging, but technology to help filter out geotagging. People might as well get started on that aspect now, figuring out ways to better designate tags so people only see what they want. Otherwise, people are going to view geotags as geospam, and the entire technology won't go very far at all."