“Thus the most important value of [volunteered geographic information] may lie in what it can tell about local activities in various geographic locations that go unnoticed by the world’s media, and about life at a local level.”

create, share, and tag your own Google Map w/o resorting to the Google Maps API.

Seattle 911 responses mashup w/ Google Maps

“KML, or Keyhole Markup Language, is an XML grammar and file format for modeling and storing geographic features such as points, lines, images and polygons for display in the Google Earth Client.”