Let’s say you commute to work every day and you have some spare time. What do you do? Read a book? Listen to music? Doze off? Not Robert Bernocco, who used this time to type an entire 384-page science fiction book on his mobile phone using the T9 input method (the one where you only have the 9 numeric keys, not an entire keyboard). Now how about that for spare time usage? (via Lifehacker)