A geocoder made from searching Flickr photos (About)
This was made way back in 2006 and no longer works! Tim even spoke at the O'reilly conference Where2.0 about it.
First blog post about it: https://thinkwhere.wordpress.com/2006/11/26/flickr-geocodr-a-k-means-cluster-enabled-geocoder/
Code: https://github.com/timwaters/geocodr