tineye seems to dredge up a lot more from the naughty sites than GIS does. It showed a couple of sites that image was on, then I just searched those sites for the model name and it showed a ton more. I think if a site has a robots.txt that blocks search crawlers it won't show up in GIS, or maybe tineye is more efficient at crawling. It finds a lot more from cheap low-traffic sites.