Re: Sigh ... Oranges are not the only fruit.
USENET already has lots of encrypted data flowing around. At least as long as it last as there are now only 647 usenet servers listed in the "top 1000".
Decades ago I needed to reduce bandwidth so I wrote a program that would take images and drop them to 6 bit gray at about 100x100 and then checksum that to see if it had recently been seen. There were a bunch of images that reduced to the same checksum but had different checksums on the original images. On group of them had single color borders about 20 pixels thick but the encoding of the image wasn't typical of "make the next 1000 pixels light blue" but was more like "5 pixels of light blue", "2 pixels of the same light blue" and so on so somehow someone was encoding data into those images or they had the worst image encoding library ever.