Information Mining

Digital photography is great for many reasons, not least of which is the array of metadata that's stored away with each image.
I've got a few apps which will reveal the background data of photos, this is a screenshot of a photo being viewed in Camera+ - showing all sorts of info, like aperture, shutter speed, ISO rating, file size, time and date of capture, which filters have been used, and because of the GPS tagging that goes on - you can view where the shot was taken.