Yeah not sure what they mean by "online" in the early 80s. That was even too early for BBS to really be a big thing. Like there were people out there messing with that stuff. I had a modem for my MSX in 80s, where you put the horn on the modem to interface. But besides from dialing my one friend who also had one and being amazed at the tech, it had no real use. The graph makes it seem like an actual percentage of people were not only online, but meeting their future partners on there? That makes me doubt the validity of this graph.