Modern steganography

Bryan Allen, creator of "The Lightning Catchers" image used:

"Please excuse the watermark. It won't appear on your poster. Stealing this picture had become sport for many. Illegal copies have appeared on no less than a bootleg Pink Floyd CD and even an FBI web page. Go figure. Does one sue the FBI or just smile and move on?"

http://www.bryan-allen.com/Posters/TheLightningCatchersPoste...