Yahoo! Placemaker™ Beta - YDN
http://developer.yahoo.com/geo/placemaker/

Placemaker is a webservice that takes in text and returns the locations found within via either XML or enhanced GeoRSS

"Yahoo! Placemaker is a freely available geoparsing Web service. It helps developers make their applications location-aware by identifying places in unstructured and atomic content – feeds, web pages, news, status updates – and returning geographic metadata for geographic indexing and markup."