Yahoo Research Berkeley unveils The World Explorer

Yahoo! Research Berkeley unveils the World Explorer
From the announcement:
The World Explorer uses public geotagged photos contributed to the world by the Flickr community, automatically extracts the tags that are relevant and representative for each map region or zoom level and connects these tags to the photos that represent that area.

Don’t Forget: For the past year, Yahoo Research has offered the ZoneTag (Geotagging) Project

Source: Yahoo Research