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Nice to see a blogpost on the Mastodon blog about implementing a basic ActivityPub server blog.joinmastodon.org/2018/06/

(Though technically webfinger isn't needed for activitypub, but it is for mastodon interop!)

@cwebber I'm curious how subscribing between different AP server implementations is going to work UX-wise. Mastodon, Pleroma and peertube all work with the user @ domain webfinger scheme, but what identifiers shall be used for implementations lacking webfinger?

Eugen @Gargron

@notclacke @schmittlauch @cwebber this doesn't work without webfinger too.

@Gargron @cwebber @schmittlauch Which bit and why? Does Mastodon insist on finding an acct: reference on a URL given and then go look up WebFinger for the references it wants?
(in the resource pointed to by the URL given)