2022-02-08 UTC
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capjamesg[d] When using Vouch, a Webmention endpoint would look for an optional "vouch" by a third-party. If you trust that third party (as defined by a registry of sites you trust that you create and maintain), and the third party links to the person sending you a webmention, the Vouch is valid. Comments with a valid vouch are much less likely to be spam.