Originally posted by Boucicaut Useless? Perhaps so if your shooting is limited to your own lawn and the park down the road. Believe it or not, there's many among us who actually go to places, even venture in the great outdoors to take pictures. That's where GPS comes in real handy. I've missed it countless times.
GPS is great. I always keep my handheld Garmin with me when I'm off to remote and unfamiliar environments (including urban jungles). It works 48h on 2 AA batteries, is small, light, has a rugged rubber exterior, bright screen and intuitive controls, is reasonably waterproof, and most importantly, it has a 2GB sd card filled with very detailed topo maps. It's a dedicated GPS and it does its job very, very well. A GPS on a camera couldn't come close to its usability.
Moreover, I usually have a very good idea of where I took a photo. I've never browsed though my photos and thought "hmm, I can't remember exactly I took this. My life would be enriched ten-fold if I did."
If I wanted GPS coordinates of my photos I would just create a waypoint (two button presses) for every spot I shot from. Alternatively, I can tell my GPS to plot a path as I walk and transfer it onto my computer later and figure out where I shot what with very reasonable accuracy.
GPS on a DSLR seems about as useful as having GPS in my coffee cup, so I always know where I drank my coffee.