Electronic publishing is evolving to overlap with the world of on-line multimedia services. While there are many issues still to resolve, including copyright protection and content presentation, it is generally accepted that the Internet, and specifically the World Wide Web, provides a glimpse at a possible future electronic publishing industry. The Internet itself has witnessed incredibly rapid growth in the last five years, thanks to the popularity and ubiquity of user-friendly Web clients like Netscape's Navigator and Microsoft's Internet Explorer. Many organisations now consider a presence on the World Wide Web to be vital to their commercial interests. However, due to the absence of a suitable remuneration mechanism, most Internet publishing is funded indirectly by advertisements that adjoin popular articles and sites, or through public subsidy of universities and research institutions. With the exception of some fixed-fee subscription based services with dynamic content, e.g. newspapers, very little content, or information, pays for itself at the moment.