David Barr asked about this on another thread so I've changed the subject heading.
This is the Photoshelter blog posting about TinEye:
http://blog.photoshelter.com/corp/2009/09/photoshelter-and-tineye.html
Presumably images in Photoshelter galleries are already covered ( or in the process of being indexed by TinEye) but the checking hasn't as yet been automated.
The trouble with TinEye is that it only covers such a small amount of what is out there. It doesn't find pics that I know are there on websites.
Ian Murray