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I write blog posts for multiple WordPress.org blogs and where content overlaps, I wonder if I should post it separately on multiple blogs or not. Often this happens with posts I write to my personal blog which are pertinent for groups I volunteer for who share my interests. Will this kind of cross-posting hurt or help search engine optimization for the sites, and is there anything other than SEO to consider related to this? If anything, I imagine linking a post between multiple websites improves SEO for either/both since both become linked to by at least one additional node of the internet.
If it is OK to cross-post to different, separately hosted Wordpress.org blogs on independent URLs, are there better and worse ways to do it? Is copy and pasting the content between sites any better or worse than using a plugin to do it aside from work involved either way?