You have 962 unread tweets on your timeline. Better start checking them, right? Wrong. Phone apps should be essential-yet-seldom-used tools, such as Maps, Clock, Camera, FlightTrack, Notes, Calendar, Mail, banking apps, news alert apps and others. Twitter is not a tool. It's a social mess and a terrible waste of time, known mainly for getting Hollywood prima donnas and professional athletes in hot water over their stupid tweets. Stop the madness!