The old code that reddit published says you have to put a copyright on any service that runs the software, so /r/foo would be fine, and the bottom of each page

The old code that reddit published says you have to put a copyright on any service that runs the software, so /r/foo would be fine, and the bottom of each page would say something like “Portions of server software copyright reddit 2017”. I am not a lawyer, but that’s my reading of the license on that repo.