Except for the fact that you can detect that there is steganographic content it is aweseome :-) UMich's CITI group put together a tool to find stegonagraphic images and tested it on ebay. Now I don't have a Sun system to run their tool (if I could even load it off of QIC tape!) but the basic idea was that steganographic encoding techniques interfered with the natural noise of the image. As I recall they used techniques similar to what the SETI@Home guys were using to detect the presence of signal in noise. Dr. Peter Honeyman could tell you more and probably point you at the sources. If would be a great followup to that work to see how well it detects your images.