The annual BookExpo convenes in New York to dissect all things book. “Sales have been flat in 2007 and the number of independent bookstores continues to shrink, from 1,660 last spring to 1,580 this year, according to the American Booksellers Assn. Three BookExpo panels will focus on another troubling subject, newspaper reviews, in the wake of cutbacks at the Los Angeles Times and the Atlanta Journal-Constitution, among others.”