Infographic of the Day: Using Flickr Geotags to Map the World's Cities

Photographer Eric Fischer uses Flickr's geotags to create city maps that show the places of intense human interest.

We've seen maps of photographic activity around the world, and maps of traffic activity in a city, which reveal how heavily roads are used. And now, photographer Eric Fischer has combined both ideas, creating maps of 50 different cities around the world, using only the geotags of photos uploaded to Flickr and Picasa. What emerges are basically maps of human interest--that is...