New York and other big cities have supposedly been able to reduce crime by improving police tactics, including the clever use of geographic data, applying tools like this one.
But this report suggests that other city services could do as well (H/T Planetizen).
The Wired story suggests that 311 calls are as rich a source of data as 911 calls. I love the graphic at the top. But why all the calls about street lights in the late morning and at noon? This stuff is surely not simple, but perhaps the other NY departments can learn from the NY cops.