Reposting content on third-party websites has been a hot topic ever since LinkedIn started allowing members to write posts for the platform. Many people have been re-sharing their content verbatim there.
Neil Patel addresses the issue well in this post. It's backed by personal experience, which makes it a very valuable case study.
Patel offers three suggestions:
- Rewrite the content
- Talk to the site owner
- Post the content on the other site only
He also talks about the rel=canonical tag.