Figure 3

Visitor traffic 2004–2007 for 50 most popular Internet cigarette vendor websites.

Average number of unique visitors from March 2004 to January 2007 for the 50 Internet cigarette vendor websites which were most popular in January 2005. Not all of the websites which were most popular in January 2005 were in business in March 2004. Sites were counted as missing data until they started receiving traffic.