Been looking a bit more into GPS mapped photography and came across the GeoSnapper, which enables users to upload and distribute accurately geo-referenced digital photographs. This is a bit like the Degree Confluence Project, but is more focused on images that have embeded GPS tags in them. I was interested in finding out a bit more how GPS enabled phones integrate GPS data into their images and found this link that explains how this guy extracted the GPS info from EXIF encoded images! Nice. So if you can encode them in this format, then it shouldnt be long until this is a standard feature on most consumer grade digital cams.