"An email "greeting card" program that sends spam from an unsuspecting recipient's computer has sparked many complaints from victims, as well as alerts from anti-virus companies. Those affected are also bombarded with pop-up ads in their web browsers. The program mimics the action of a computer worm carrying a concealed "Trojan horse" application, and tricks its victims into agreeing to installation. Victims are sent an email telling them they have received a virtual greeting card at www.friendgreetings.com and must install a software "plug-in" in order to view the message. But as soon as the program is installed, it begins delivering pop-up advertising. The program also uses the email address book on the targeted computer to send out email advertising to contacts. The program's full capabilities are only revealed in the small print of two lengthy End User License Agreements displayed during installation." http://www.newscientist.com/news/news.jsp?id=ns99992975
