Google Maps added Picasa Web Albums as another source of user-uploaded, geo-tagged images into Street View. The feature is available at major landmarks around the world, in places as different as Paris, Tokyo, and New Zealand. “Millions of people use Picasa; Now, their photos’ll help Google Maps users to get a better impression of a geographic place, especially for areas where we may not’ve any Panoramio photos. We've selected these photos by looking for geo-tagged public images in Picasa Web Albums. We apply face detection to screen out images with identifiable individuals and image matching so that we're including the most relevant photographs,” LatLong blog.