Describes three companies' approaches to marketing and selling CD-ROM products on the World Wide Web. Benefits include low overhead for Internet-based sales, allowance for creativity, and ability to let customers preview products online. Discusses advertising, information delivery, content, information services, and security. (AEF)

For years computer viruses have threatened productive use of personal computers, challenging users and support providers to prevent and recover from viral attacks. Now another type of computing malady has begun to enter popular consciousness: spyware. Typically, analyses of spyware focus on technical issues or provide pointers to resources for…