links for 2010-06-23

"Eric Fischer won’t stop. Following up on his Geotaggers’ World Atlas (previously), he’s separated out the geodata generated by locals from that generated by tourists — locals being defined as people taking pictures of the same city over a period of greater than a month. The idea being to see whether locals (blue) and tourists (red) take pictures (which is to say, visit) different areas, which intuitively sounds right, but it’s interesting to see the hard data (at right, San Francisco)"