New York—Dow Jones & Co. reported Thursday that advertising linage at its flagship, The Wall Street Journal, declined 2.6% last month, compared with May 2004. On a per-issue basis, linage was down 7.3%. Year-to-date, linage was down 6.2%. At Barron’s, total national advertising pages decreased 6.9% in May. The Wall Street Journal Europe’s linage increased 12.1% in May (up 6.5% per issue). The Asian Wall Street Journal’s linage increased 4.6% (down 0.2% per issue).