I belong to 1 site that is forever cautioning about using her patterns for other than personal use and there is even a site that tells how to report seeing her patterns used for the purpose of selling the item. Another site that I buy patterns from has my name at the top of the page as a reminder that it was sold to me and that "copying and distributing" is prohibited and it is for personal use only. I don't like that, but I do like their patterns because I can download them immediately!