Hi Doug -

I've suggected this too you before, but it would probably be best if you put a notice about copyrights on each page (in the general form which is used to create those pages) pointing out the images are the works of their creators and may not be used elsewhere in any form without their creators' permission, and that they should only be used by way of direct links to your site.
As it is, Buck is perfectrly entitled to do what he is doing, and more importantly, if you ever hope to put a book together, even your own images could end up being pirated beforehand.

Other than that, I would also suggest you put a Pay pal dontaion box on each page, and I sure would like to see each set of images broken out by probe. I know you have a direct interest in the MERs, and breaking out the images by probes will take some time and work, but for me the most interesting parts of your site are those dealing with the historical images from the Vikings, the Pioneers, the Veneras, other historical imagery, and the Cassini Hyugens images of Titan, and the processes used on each.