A government health information Web site exposed information about thousands of people who asked for pamphlets and brochures about drug and alcohol addiction. Because of a software flaw, consumers who visited the site and requested titles such as "Moving Forward With Your Life, Leaving Alcohol and Other Drugs Behind" had their names, e-mails and addresses revealed on an Internet page. The site, Health.org, is maintained by a private subcontractor for a Department of Health and Human Services agency.