Of course uucp and the internet are different, but seismo, later uunet, run by the same person, were central hubs where they connected, and ftp.uu.net was one o

Of course uucp and the internet are different, but seismo, later uunet, run by the same person, were central hubs where they connected, and ftp.uu.net was one of the main software distribution points. Before seismo became the most popular, it was Bell Labs ihnp4 (Indian Hill), decvax, ucbvax, mcvax in Europe, etc. That's why email addresses in signatures and mailing lists were usually expressed relative to seismo like "...!seismo!foo!bar!baz!user" (pure uucp routing), or "foo!bar!baz!user@seismo" (mixed internet/usenet routing), or later "user%foo%bar%baz@uunet.uu.net" (uunet gateway with fully qualified domain name), because everybody knew how to get to seismo (later uunet).