A Flickr user can decided to protect the photos that he uploads to Flickr which has the effect that the a user who is trying to download a protected photo will end up with a gif called spaceball.gif instead of the real image. I’ve already shown how it is possible to avoid saving spaceball.gif images [...]

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Some images at Flickr are weakly protected with an image overlay called spaceball.gif. Whenever you right-click the image to save it you do save spaceball.gif instead which is a 1×1 pixel image showing nothing at all. The same happens if you try to drag the image to your desktop or hard drive.

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