{When they GIVE it away they also GIVE up rights to it.} Not always true - when you release something, you have the right, legally (I think; I'm not a lawyer), to restrict it's use, whether you give it up freely or sell it. And some sales licenses also restrict commercial use (or even include a graduated scale based on intended use)... Usually there is a contract of some form involved - that contract can be a general statement (like the PFO has been developing, and the 3D Commune has also briefly discussed) that lists basic usage rights, or it can be a detailed document, like the licensing agreement that comes with, say, Poser 4... By downloading the item, you have implicitly accepted the terms of that contract, whatever it may be.