The SDF system was created at a time (1987) when accessing to a timesharing Unix system was a rarity for the majority of PC users who's outside of an institutio

The SDF system was created at a time (1987) when accessing to a timesharing Unix system was a rarity for the majority of PC users who's outside of an institution, thus "Public Access Unix System". At that time, the creation of a public minicomputer running Unix, which you can telnet into was groundbreaking. And in the late 90s when the WWW was taking off, it offered a wide ranges of community services, including a shell, access to newsgroups, Gopher, E-mail, IRC, and being an ISP with dial-up and DSL network connection, that served as a great platform to your online presence. The time has changed and today it doesn't have the significance that it was. Running a system by yourself or renting a virtual server makes more sense. Although SDF itself is still a good community, and now has a Minecraft server and a Mastodon server in addition to the technical BBS.