Thanks Blame. This is a good point to bring up. We need to respect the copyrights of fellow artists, no matter what medium. We may only share patterns that we have personally designed. Copyrights, usage, and distribution of patterns are covered in the User Guidelines and agreed to upon registering for this site. You can review the User Guidelines at any time. You can find the link is at the bottom of every page. You can also find additional information in the Pattern Request Forum Rules.
With that said, if someone is interested in a pattern that you did not design, feel free to link or tell them where they can find the pattern for themselves. There are a lot of great patterns out there, and sometimes they get lost in the vastness of the internet.
I hope this clears things up a bit. Happy scrolling!