Recall is was way back in 2009 that Flickr first released the first public version of the Flickr Shapefiles
From 2009… We are releasing all of the Flickr shapefiles as a single download, available for use under the Creative Commons Zero Waiver. That’s fancy-talk for "public domain". Flickr has waived all copyright and related or neighboring rights to the "Flickr Shapefiles Public Dataset, Version 1.0".
Fast forward to the latest update from Flickr…
Flickr shapefiles public dataset 2.0 – we haven’t completely forgotten about shapefiles and have finally gotten around to generating a new batch (read about Alpha Shapes to find out how it’s done). When Aaron did the first run we had somewhere around ninety million (90M) geotagged photos. Today we have over one hundred and ninety million (190M) and that number is growing rapidly.
Version 1 of the dataset had shapes for around one hundred and eighty thousand (180K) WOE IDs, and now we have shapes for roughly two hundred and seventy thousand (270K) WOE IDs.
Originally we provided the full dataset in our own home-grown XML format because, well, it seemed like a good idea. For version two we’re releasing the shapes in GeoJSON format… if GeoJSON doesn’t suit you you can use a free tool like ogr2ogr to convert it to something that does.
For more information about Flicks Shapefiles see http://code.flickr.com/blog/2008/10/30/the-shape-of-alpha/
To download See:
http://www.flickr.com/services/shapefiles/1.0/
See also the Flickr Developer Guide
http://www.flickr.com/services/developer