1. Berry D. Controlling unsolicited bulk e-mail. Sun World (Aug. 1997); www.sunworld.com/sunworldonline/swol-08-1997/swol-08-junkemail.html Berry D. Controlling unsolicited bulk e-mail. Sun World (Aug. 1997); www.sunworld.com/sunworldonline/swol-08-1997/swol-08-junkemail.html
2. Spam!
3. Dietz N. Survey: Banners losing effectiveness. Business Marketing (Sept. 1998). Dietz N. Survey: Banners losing effectiveness. Business Marketing (Sept. 1998).
4. Global Research; www.glreach.com/globstats/index.php3 Global Research; www.glreach.com/globstats/index.php3
5. The Problem; www.cauce.org/ The Problem; www.cauce.org/