New York—Dow Jones & Co. reported advertising revenue for its flagship Wall Street Journal rose 10.1% in May, due to a 12.6% increase in ad volume. Ad linage increases in technology, classified and financial advertising were partially offset by a slight decline in general advertising. It’s the ninth consecutive month of ad revenue and linage gains for the Journal. However, the company’s other newspaper divisions saw advertising revenue decline. Total ad revenue for Barron’s fell 16.8% in May. At Dow Jones’ Ottaway Newspapers—a portfolio of 15 daily and 19 weekly newspapers in nine states—ad revenue fell 2%.