Hi I think it is really wrong of someone to spam you looking for goodies, but could it be a confusion about what is meant by commercial use, I’m never sure if I am just prohibited form using it in a commercial image or from selling which the later I would have thought as self evident as I didn’t make the thing, which is why I never get stuff that is for non-commercial use as I might do an image using hair or glasses and be told I have infringed on someone’s copyright. I don’t mind someone putting that limit if they want to as it is their work but sometimes I really would love to use something and am in doubt as to whether or not I can and leave it. But as I said at the beginning no one should be hassling you about your generosity.