They're also playing a more important
role in how information is organized and found. For example, for the environmentally inclined, there are maps of biodiesel fueling stations in New England, yarn stores in Illinois and hydrofoils
around the world. Other maps show practical current information, such as road construction, collapsed highways and speed-trap locations.
Maps can also be useful in flagging community issues. James Lamb of Federal Way, Wash., created a map to illustrate the spread of graffiti in his town, asking others to contribute to it. What we have here is a map-making movement similar to Wikipedia.