What is the purpose of the rel = "pingback" link?
What is the purpose of <link rel="pingback" href="<?php bloginfo( 'pingback_url' ); ?>"> ? It appears in the default wordpress 2014 theme, but pingbacks work without it.
+7
Emanuel mocean
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Pingback URLs can be represented via HTTP headers , so remove them from HTML until the HTTP headers are corrupted.
Having them in both places will help customers support only one way to detect pingback URLs, but most of them implement both. Using headers is even better, because clients can execute HTTP HEAD requests to find them, and there is no need to extract and parse all the HTML.
+4
cweiske
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