(Updated) This is a great example of a very practical use for satellite technology that will likely be commonplace in the near future.
A company called Scalado created an app called "Remove" uses multiple satellite images of well-known landmarks and helps users erase temporary images (i.e. other tourists, and bird poop) from the photos) from the photos. The end result is a compiled snapshot that shows only the intended subjects. The above video demonstrates how it works.
According to the press release:
"...Remove is a technology that automatically highlights and removes any unwanted object from a captured photo. It is the world’s first Object removal software to be released on a mobile device.
"Remove solves common photographic problems with unwanted objects in captured images, such as people getting in the way of our camera shot. Remove detects and selects the unwanted objects which simply can be removed automatically or by touching the selections on the screen or after capturing the image..."
Although the app is demonstrated on and Android device, unfortunately, it's not available on the Android Market, yet. Hopefully, it will be after it debuts in Barcelona on the 27th.