Speed up the process of retrieving photos for geolocating by applying the Wikimapia API and Python scripts as laid out step-by-step in this entry-level tutorial.
Flickr has added more real-time goodness to their photo API. Using a publish / subscribe (PubSub) system, developers can now receive real-time updates across millions of photos across Flickr friends, Flickr Commons, and by tags and geo-location using the Flickr Real-Time API.