Westlake Village-based Internet advertising firm ValueClick said today that it has promoted David Yovanno to Chief Operating officer of the firm's U.S. Media operations. Yovanno has been at the firm since 2000, and was most recently the company's general manager of U.S. display advertising. According to the firm, Yovanno will take over the duties from James Zarley, the firm's executive chairman. Zarley has been heading ValueClick's operations since the resignation of Jeffrey Pullen in June of 2006. Yovanno has served in a number of executive positions in ValueCLick, and has also served in the United States Navy and St. Joseph Health System.