NEW YORK (AP) — Simon & Schuster has named a former Amazon.com executive, Greg Greeley, as its new CEO. The publisher announced Monday that Greeley’s appointment is effectively immediately. The 62-year-old Greeley succeeds Jonathan Karp, who announced last year that he was stepping down to head his own imprint at the company, Simon Six. Simon & Schuster, which celebrated its centennial in 1924, is home to Stephen King , Colleen Hoover and Bob Woodward and many other bestselling and prize-