The sticking point with this, as with most geo APIs which depend on non-free data, is the terms of use:<p>"The data in the API is our intellectual property or that of our partners who provided it to us. It is not yours and we are not granting you any broad license to use this data outside of the use of the API."<p>"You agree that you will not, and will not assist or enable others to:<p>a) cache, record, pre-fetch, or otherwise store any portion of the Company Content or attempt or provide a means to execute any "bulk download" operations;<p>...<p>j) make requests against the API that are not user initiated;"<p><a href="http://code.google.com/p/geo-api/wiki/TermsOfUse" rel="nofollow">http://code.google.com/p/geo-api/wiki/TermsOfUse</a>