@jeffalyanak good question. unsure what markup mastodon uses - perhaps `@foo:example.com` would work? or alternatively https://matrix.to/#/@foo:example.com (we will get mx://@foo:example.com or similar too in future, too)
Why is this step necessary? social.rights.ninja might not be the server where you are registered, so we need to redirect you to your home server first.
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