OK you got your new iPhone 4S, congratulation to you.
The iPhone 4S comes with updated iOS 5.0 packed of new features to play. One of them is the iCloud Photo Stream service, where you can shoot a photo, automatically stream to your iCloud account, and be able to see this photo to your other iOS device running 5.0. Sweet!
continue reading: http://www.whaddya.com/2011/10/icloud-photo-stream-howto-delete-them.html