That's a very good question. I'm not experienced with law, but found an article, and they say that the in case of defamation, it's the publisher that's liable.

That's a very good question. I'm not experienced with law, but found an article, and they say that the in case of defamation, it's the publisher that's liable. https://www.hg.org/legal-articles/republishing-someone-else-s-comment-is-it-defamation-47402 https://www.hg.org/legal-articles/republishing-someone-else-...