I'm in another WG who want to use it, so we can define it in a W3C Rec. But we want a definition that the #activitypub community is also happy with.
@firstname.lastname@example.org i feel like it's a necessary addition to activitypub's vocab, especially if it would allow account portability between vendors
for instance, i've moved from mastodon to microblog.pub, and may wish to move again in the future,
alsoKnownAs would be helpful in these situations
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