As an aside, this site shamelessly hosts patterns that often cost money. The site defends this by saying:
Before you express your indignation at me that I posted your pattern, file an industrial patent for your pattern. Almost all patterns have a commonly used solution or are shamelessly copied from normal manufacturers.
Names of creators are included if you would like to directly support them. For those like me who just want to practice new patterns and don’t have a lot of spare cash, I don’t have any moral objections to using this site.