<a href="http://www.geonames.org/" rel="nofollow">http://www.geonames.org/</a> (download area at <a href="http://download.geonames.org/export/dump/" rel="nofollow">http://download.geonames.org/export/dump/</a>)<p>Used as the placename source for <a href="http://www.dopplr.com" rel="nofollow">http://www.dopplr.com</a> among others.<p>HTH,<p>Brendan.