An interesting form of volunteerism
Mr. Hintz is a foot soldier in an army of volunteer cartographers who are logging every detail of neighborhoods near and far into online atlases. From Petaluma to Peshawar, these amateurs are arming themselves with GPS devices and easy-to-use software to create digital maps where none were available before, or fixing mistakes and adding information to existing ones.
Like contributors to Wikipedia before them, they are democratizing a field that used to be the exclusive domain of professionals and specialists. And the information they gather is becoming increasingly valuable commercially.