Agree with you entirely, but this is a VERY difficult problem for us to resolve.
I've just spent all morning on Google Image search and eventually I've proved:
http://www.escort-ireland.com/4112/S...sh-escort.html
is actually
http://www.darknightlingerie.com/images/80111.jpg
But it took several hours to find that!
We are currently trying out solutions from
http://www.picscout.com and
http://www.ideeinc.com/products/pixid/
We really need something smart that can regonise fake photos as doing it manually is too difficult.
I'll keep you posted!
Pat x