Sir Alex Ferguson on Twitter
Ferguson said: "I don’t understand it, to be honest with you. I don’t know why anybody can be bothered with that kind of stuff. How do you find the time to do that? There are a million things you can do in your life without that. Get yourself down to the library and read a book. Seriously. It is a waste of time. It seems to have a certain momentum at the moment. Everyone seems to want to do it."