Flickr have introduce a new 'places' feature, which makes geo-tagged photos easier to find by navigating through a map, browsing or searching. There's an end-user focussed screencast explaining how it works. There are more technical links under the 'Are you nerdy?' heading.
Features like this and Google maps seem to be creating a much more 'map savvy' generation of online users - I think this could be really beneficial because they're educating our users about mapping technologies and interfaces as well as making it possible for ordinary people to create geo-referenced content.
Flickr have also introduced stats for Pro accounts, which will make evaluating the use of our content a lot easier.