27) Knowing telephone numbers off by heart
After typing the digits into your contacts book, you need never look at them again.
12) Letter writing/pen pals
Email is quicker, cheaper and more convenient; receiving a handwritten letter from a friend has become a rare, even nostalgic, pleasure. As a result, formal valedictions like "Yours faithfully" are being replaced by "Best" and "Thanks".
Made superfluous by the link, although Wikipedia is fighting a brave rearguard action.
Scrabbling around in your pocket to dig out a phone may not be as elegant as glancing at a watch, but it saves splashing out on two gadgets.
I really would like to have a pen pal. You can catch the rest of the list here.