WordPress has the option to use Trackbacks, a way to reference other blogs and their posts in your own blogs and comments, much like acknowledgements and references in academic papers and books.
This can be a good way to engage in conversation with other bloggers and get your blog noticed, but it is also regularly abused by spammers, which means it may be deactivated by the blogs you are looking at.
How to use a Trackback:
Your trackback may appear on their blog instantly, or it may be in a moderation queue.
Article ID: 466
Created On: Mon, Mar 16, 2015 at 4:52 PM
Last Updated On: Thu, Apr 23, 2015 at 12:29 PM
Online URL: https://www.heartinternet.uk/support/article/how-do-i-use-trackbacks-in-wordpress.html