FidoNet is a system whereby users transder mail and files via modem using a “proprietary protocol” These systems link to gateways connected to the Internet, so mail can be exchanged between the two networks. Some web-based gateways exist, and I’ve noticed some telnet-accessible BBS’ offer Fido net access. The appeal seems to be the class of users is different, and there’s more of a sense of community. Fidonet is strictly regulated, not allowing any commercial content.”]
Source: https://taosecurity.blogspot.com/2003/08/fidonet-links-users-over-phone-lines.html