Book excerpt: Long ago dubbed the fourth branch of government, the American press remains to most of the general public an inscrutable enterprise whose influence and behavior are alternately welcomed and maligned; yet the proper functioning of a democracy depends upon a media-literate populace to act as the ultimate watchdog. With wit and authority, John Hamilton and George Krimsky lead readers through the whirl of print journalism. They offer a curiosity-satisfying blend of explanation and interpretation, history, anecdotes aplenty, and statistical analysis to show what's wrong and what works with today's newspapers.