Article Photos: What earnings reports have revealed about ads 1/1

  FILE - In this May 20, 2012 file photo, a Yahoo sign stands outside the company's offices in Santa Clara, Calif. Yahoo turned in another lackluster performance in the second quarter announce the company on Tuesday, July 17, 2012. The results underscore the challenges facing Yahoo's newly hired CEO Marissa Mayer as she tries to turn around the Internet company after a 13-year career as a top Google executive. (AP Photo/Paul Sakuma, File)