[Carltonian]

Once the taboo of "I saw this person's update on Facebook, but I can't just jump into a conversation with them referencing that update without qualifying it with a: 'I saw your update on Facebook'" then Facebook will begin to advertise itself as timeshifting social interaction. You can "catch up" with your friends without having to actually talk to them. Here's one use case (sorry for anybody seeing me reference this car crash multiple times):

I got in a car crash. If I had Facebook, I could have made a post about it and explained it once. I've explained what happened to 20 people it feels like, all of whom have Facebook. After the first few times of realizing I had basically drafted a script of the accident, I began not going into too much detail with everyone, only for them to ask more questions until I returned to the script. All-in-all though, timeshifting social interaction sounds really bad for everyone, but really good for increasing how much a single person can consume overall (which is again, probably bad for everyone).