
With all of the third party companies providing for enhancements for the Flickr website the one that interested me most was Mappr.
http://www.mappr.com/
I love the concept and am excited to see it expand from its beta origins.

There is another site, not affiliated with Flickr, called Woophy:
http://www.woophy.com/map/index.php
It is a much more easier site to maneuver through and is fun to play with. Also it provides a better forum for budding photo artists to show and have their work critiqued. However it does not provide the vast numbers of photos that Flickr has already under its belt.