How about a reverse color -- in which you DO NOT own (meaning get associated with) any of the pics you take -- they ONLY get plotted to and left on a map using simpleGEO.

Basically, you pull out your camera, snap a pic and it gets uploaded and displayed at is geoloc, and removed from your phone - then all you see is anon pics left where they weree taken.

One data point that would be of use/interest would be the direction of the camera, and a timestamp.