New York--Dow Jones & Co. said Monday that ad volume at its flagship Wall Street Journal fell 1% in January, compared with a decline of 33% in January 2002. General ad linage at the Journal increased 3% mainly due to increases in professional services, travel and automotive advertising, partially offset by declines in health care, consumer credit card and aviation advertising. Technology linage was down 12.6% in January, primarily due to declines in b-to-b e-commerce and computer hardware advertising. Financial advertising was down 18% in January due to continued weakness in tombstone and retail advertising. At the weekly Barron's, national advertising pages per issue decreased 23% in January compared with a decline of 20% a year earlier.