Dumb SEO Questions

(Entry was posted by LaManouchka on this post in the Dumb SEO Questions community on Facebook, Thursday, December 14, 2017).

Hello, I have a question about duplicate content

Hello, I have a question about duplicate content. I have been told to use cononical URLs when copy a blog post from my website to publish it on Medium or Linkedin in order to avoid duplicate content sanction.
Is it really a good practice & what is the official rule about this case.
Thanks for your help !
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    View original question in the Dumb SEO Questions community on Facebook, Thursday, December 14, 2017).

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