Steganography with Flickr
yiangocy writes "Steganography
is not something new, there have been techniques and available programs for hiding data in pictures/audio files for a long time now. However, one step further is using popular online photo sharing sites, such as Flickr in hiding your data, successfully."
I don't know what data people would have to hide and then share on a public photo site.
The only and best use I can think of for this would be for terrorists or other evildoers to communicate surreptiously on the Internet. With the current state of affairs in the world, this is a very real and likely possibility.
I hope Flickr keeps their eyes open in case of any suspicious activity and report it to the authorities.