Well I don't think it can hold up simply because even if you are "giving" them rights to use your content, in most of our cases, the content isn't ours to begin with, we only hold a license to use it. If they start thumbnailing or grabbing our pics and placing them on different pages on different domains, I think there are quite a few parties that would be interested in such a violation (APIC anyone?).
I'd like to see them try
Nz