So I was browsing around for more information about Webmentions, its implementation and popularity. I happened to land on Stuart Langridge’s old post about webmentions.
What interests me is the Vouch feature of Webmentions. I haven’t seen any evidence of its use after some more browsing of Indieweb sites.
I think this old post by Aaron Parecki is a test for vouch.
Anyway, do you want to upload, embed and share SVG vector files? You can try to look around in there.