Does HN have any rules on shilling? I know it's a tough thing to enforce, or detect. There seems to be a fair amount of it in this thread, although I'm not sure

Does HN have any rules on shilling? I know it's a tough thing to enforce, or detect. There seems to be a fair amount of it in this thread, although I'm not sure if it's "real" shills, or if they actually love the product. Regardless, I think people need to be more careful saying this one book/pill was the only thing that helped. A miracle! I feel like I'm reading one of those sketchy banner ads.