If you want to know how close you are to a Superfund waste site then use this. Integrates the EPA Superfund XML to allow anyone to quickly and easily find the nearest Superfund Sites to their home address or a location of interest.
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Eat Locally Map
Google APIlity Library
Using PHP with Carma API
Geocoding in CakePHP
Code322 PHP Google Maps
Ruby Geocoding Library
APIs, mashups and code. Because the world's your programmable oyster.
Executive Editor, ProgrammableWeb. Author, Map Scripting 101. Lover, APIs.