2018-07-20 UTC
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@johnholtripley "Webmention is a standardised protocol that enables one website address to notify another website address that the former contains a reference to the latter. It also allows the latter to verify the authenticity of the reference..."
https://alistapart.com/article/webmentions-enabling-better-communication-on-the-internet (twitter.com/_/status/1020298683529814016)