Some related posts from Technorati and Google.

 [Googlemapsmania.blogspot.com] Google Maps Mania: July 2005: So if everyone currently doing Mapping Hacks fed out KML data based on the Bounding Box, you'd be able to see Craig's List Houses, Yahoo Traffic Conditions, Sexual Offenders, Metafilter Members and Flickr Photos all on the same map, as you moved around it. Add in Good Food Guides, GPS equipped feral robot dogs, geotagged web cams, (time based) meet-ups and so on and that's a pretty rich mix of public soup data.

Reflected tags on Technorati: Blog, Geotagging, Geotags.org