I agree, soulhuntre. But let's say the scenario were as follows: (hypothetically speaking) I create a texture. I post it in freestuff. User Joeblow downloads it. Joeblow makes a texture using a chunk of my texture. User Whozit downloads Joeblow's texture and thinks it is so good, she asks him to use it in her commercial project. Joeblow, being someone who doesn't care who's toes he steps on says go right ahead. User Whozit now has fullfilled their obligation of getting permission even though it's my work.