Content usage and REuse

[iMan]

If I buy a photo set of a babe with big tits, and it's got 125 pics in it, I assume that I can use that for 5 different big tit category sites, right?

Now, is there some unspoken rule on when to use all of it?..
or is it ok to use that content for 5 sites with different layout 5 days in a row?

And once I've used all pics for 5 different sites, can I ever reuse those photos on free sites or are they done as far as I'm concerned?

I'm only talking about free sites here, not TGP or any other type.

Thanks.