The prescription drug market is enormous and now includes millions of Americans who go online to get information about the medicines they consume. According to a May-June 2004 telephone survey of 2,200 American adults, 64% of American households contain a regular user of prescription drugs. One in four Americans (26%) has used the internet to look for information about prescription drugs. Just 4% of Americans have ever purchased prescription drugs on the internet. Prescription drug spam plagues many internet users – especially men.