When a user or community is local, its URL is /u/user_name and /c/community_name, respectively, but for a non-local user or comminity, it's /user/12345 or /community/12345, where the number is the user or community ID. I think it would be better if federated user and community URLs could be expressed as something like /u/user_name@lemmy.example.com and /c/community_name@lemmy.example.com to make them human readable and editable. I think the @ character is a good fit because it's already used in the web client for representing federated users and communities, and it isn't converted to URL encoded form in my testing in Firefox and Chromium, so a URL containing it won't have to be encoded as %something to work.

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