] We wrote some software to retrieve images from the Web
] and check if their thumbnails differ from the original
] images. In some cases we found interesting stuff,
] sometimes we even found hidden port but most of the stuff
] was boring.
]
] To give others the opportunity to see what images turn up
] without having to spider the web and help us to weed out
] the interesting images we wrote this simple
] Web-Application which resembles Hot or NOT. Just rate the
] image with the buttons at the top to see the next image.

1st interesting thing learned at interz0ne: EXIF thumbnails are often left unmodified by photoshop manipulations.

Demo: Differences between JPEG Images and their EXIF Thumbnails