I never had a FB account, and I never will. If a thousand friends tell me to get one, my answer will be still "no." I don't do Twitter, I don't do Google Buzz, I don't do Google Plus, etc. etc.
These are all machines for datamining. These services aren't provided for free; you are paying with every bit of data that you enter. Like World of Warcraft, these companies entice you to spend more and more time there, away from productive life. They want you to play stupid games, they want you to send useless announcements of irrelevant facts, they want you to read those announcements coming from others. None of that is productive; all of it is harmful. You can stay "connected" all day and accomplish nothing.
FR is sufficiently different. There is only one reason to visit the FR - to read good posts and to write a few comments; perhaps to post something truly interesting once in a while. None of these posts are "pushed" to my phone (if I had such a phone.) FR is like a bulletin board - you can walk up to it whenever you have time, read whatever you want and scribble a comment or two on margins if you have something to say. Maybe someone will reply, maybe not. It's a low profile operation.
However FB, Twitter and other time-wasters are here to stay, just like TV and radio. This is because most people are happy to waste their time on useless things - especially when those people are young, immortal and without obligations. Like MySpace, these services will be catering to children. I believe the watershed between childhood and adulthood will be the day when a person willingly deletes her "social networking" accounts and starts living real life among real people, doing real things.
Pooh. I used it long before DNS, let alone SLIP.