Thing 8 Mashups
I had a look at these.  I did some of my own searching as some of the links are old now.  Looked at some on flickr too.  I keep coming back to applications that have  maps and photos combined.  One of the mashups I liked was flappr.  You can search photos by a few different ways.  Mypicsmap was another  geotagged map application but not that good I thought. I have geotagged my NCL photos - only three.