In 1998, Forrester Research published a report on the online "adult content" industry estimating $750 million to $1 billion in annual revenue. As an unsourced aside, the Forrester study speculated on an industry-wide aggregate figure of $8–10 billion, which was repeated out of context in many news stories,[6] after being published in Eric Schlosser's book on the American underground economy.[7] Studies in 2001 put the total (including video, pay-per-view, Internet and magazines) between $2.6 billion and $3.9 billion.[8]