I've implemented WebMentions in a project that uses it as a push notification system for websites that integrate our widget (which is just a <script> tag they i

I've implemented WebMentions in a project that uses it as a push notification system for websites that integrate our widget (which is just a <script> tag they include on their page). That kinda works: if you integrate the widget, you know you can expect WebMentions from https://plaudit.pub https://plaudit.pub, and thus add it to an explicit allowlist.