Since 2004, researchers at Columbia University’s National Center on Addiction and Substance Abuse (CASA) have conducted an annual study into the online sale of drugs. This year, for the first time, they’ve found a drop in the number of drug sites, down to 365 from 581 in 2007.
Joseph A. Califano, Jr., president of CASA and former U.S. Secretary of Health, Education, and Welfare, noted:

