In a look at the changing face of book reviewing and the difficulty of keeping literary dialogue alive and well, the National Book Critics Circle has established a weeklong symposium dedicated to the topic, “The Age of Infinite Margins: Book Critics Face the 21st Century.” The NBCC will host four panels, taking place on September 13, 14 and 16 in different venues in New York City. For more information about the specific events and times, go to www.bookcritics.org.