[Pen] Yes, I boycott it completely. A binding vow of total lifelong abstinence from Twitter, Facebook, and all of their their ilk, and Linkedln only for professional contacts. I am also extremely intolerant, and shout "f*** Twitter" whenever someone on Radio 4 tells me how to contact the programme through that obscene medium. And a similar reaction whenever I read a newspaper article that cites anything containing commercial-at and hash prefixes.

Alexander Graham Bell refused to have a telephone in his workroom so he would not be interrupted. Disliking a new medium of communication is not new.

My mobile is permanently switched off and nobody, except my next of kin, knows the number. Speak to the answerphone if it's important. When I'm out I'm not at rhe office. Like McCavity I'm just not there. The mobile is for me to ring the RAC if the car conks out.
As for Twatter and F*ckbook nobody expects me to be there so I'm not. Anything significant from it will in the papers/on the radio. I wouldn't say I would never use them but at the moment I simply can't see the point. Let others spout their banalities or make fools of themselves. (Just going to update my MCiOS status).

I never get calls on my mobile either. I use it if the car breaks down (which it never has, yet, touch wood), to find out who has the keys to the mill (and how far away from home they have driven before they remembered they forgot them) and to find out what time the windy miller will be home for dinner so I can time the rice. Occasionally I also use it for shouting at cold callers.

My mobile is largely an SMS-powered remote control for my daughter, and an alarm clock. It's paid for by work, but doesn't scroll up, due to dilapidation.