1. A multi-computer system including a network for embedding and reading a watermark, the system comprising: a first digital electrical computer system comprising a first digital electrical computer electrically connected to a first input device, to a first output device, and to a first memory storing a plurality of creator identifiers and creator contact data corresponding to each of the creator identifiers; a second digital electrical computer system comprising a second digital electrical computer electrically connected to a second input device and to a second output device, the second digital electrical computer being programmed to embed a watermark in a digital photographic image, the watermark including one of the plurality of creator identifiers; a third digital electrical computer system comprising a third digital electrical computer electrically connected to a third input device and to a third output device, the third digital electrical computer being programmed to read the watermark in the digital photographic image to reveal the one of the plurality of creator identifiers; a network for communicating the revealed one of the plurality of creator identifiers to the first digital electrical computer to obtain the creator contact data corresponding to the one of the plurality of creator identifiers from the memory.