used have obviously evolved. the library doesn't say how many tweets it has, but by 2013 it already amassed 170 billion at a rate of half a billion tweets per day. >> i wonder how many of those are the presidents. >> far too many this past year and far too many characters that it's doubled. do you like that? i can't stand the doubling of the characters. >> no, i like it. >> when we get on tv everyone gets to say nasty things even longer. i'm kidding, of course. all right. a flight from l.a. to japan spends eight hours in the air only to return to california. what happened and the epic twitter takedown from one celebrity on board.