One idea I had was a network of publicly accessible #SBC-based forums based on newsgroups that connect with each other via #uucp running on carrier phones. i.e. messages get carried around between different nodes of that network by phones nearby that that come by and exchange messages periodically. I was thinking one easily could hide this kind of device in another object, power it by solar, and provide an under-the-radar forum for people in a specific place, e.g. a workplace or school.