In my european mind, using sponsor content for free hosted galleries would be ok, BUT there is always the licensing issue with you guys in the US. Licenses have so many exemptions and prohibitions it's not funny at all.

What would corbin fisher, fratmen, randy blue, playboy, hustler et all say about using bought content when promoting their sites? I'd come up with the word "fraud" since the user expects to see something and buys that phantasy just because of that set he saw and then he does not get what he was promised (alas nobody will say that this is a set from the actual site he's buying).