Geo tagging is a form of metadata that allows you to store with in your photograph GPS coordinates for the exact location it was made. A while back I made a post on Metadata and Keywording Resources and encouraged you to add metadata to your images to help you keep your photo archive organized. Geo tagging is another form of metadata. Like adding information to your image’s city, state, and country metadata fields, you can also add the precise GPS coordinates. This information can be very useful for sorting and finding your images.

I recently came across this video from Peter Krogh on Geo Tagging your photographs. I think this video explains the process and some of the options you have for doing it quite well. Take a look.

Peter is an expert in Digital Assets Management (DAM) and author of the DAM Book, Digital Assets Management for Photographers. He also has a lot of great resources on his DAM Useful web site.

Update:
Are you a Flickr user? It was recently brought to my attention that there is a service called GPStagr for geo tagging your photos on Flickr.