I would think that your normal diver has much, much more metadata to upload/download than a runner. A runner doesn't carry a cell phone camera, a small portable

I would think that your normal diver has much, much more metadata to upload/download than a runner. A runner doesn't carry a cell phone camera, a small portable digital camera, a big digital camera w/ underwater housing, and a video camera when they run. So yeah, I'd think that if you could offer a community where they could do lots of stuff (love the Google Maps idea) then you could have a chance.