1 Interactive Advertising Bureau. Found at: http://www.iab.net/resources/ad_revenue.asp
2 Nielsen//NetRatings. Found at: http://www. clickz .com/stats/big_picture/geographics/article.php/3373021. The 13 countries / regions were Australia, Brazil, France, Germany, Hong Kong, Italy, Japan, the Netherlands, Spain, Sweden, Switzerland, the United Kingdom, and the United States.
3 e-Marketer. Found at: http://www.emarketer.com/estats/20000808_iab.html
4 The Internetnews.com. Found at: http://www.internetnews.com/IAR/article.php/2091641
5 The Federal Trade Commission. Found at: http://www.ftc.gov
6 Such as The Coalition Against Unsolicited Commercial E-mail (CAUCE, www.cauce.org)
7 The E-Commercetimes.com. Found at: http://www.ecomercetimes.com/perl/story/18180.html
8 www.spamlaws.com provides up-to-date legislative information on UCE.