its odd you mention this because last year I made a Wacky races Car for someone and a little while later someone else made a scene in Bryce using that mean machine model and he didn't even write a word he didn't credit me at all. I think you Should always credit the person who makes the object for you otherwise whats the point you might as well not bother making it otherwise. You make a very good point and if someone else made the model they should credit them for it. Karl