IT seems strange. Why should anyone who has access to the Internet and the World-Wide Web need to buy Yahoo! in print when Yahoo! is right there on-line. The book is there in the form of Yahoo! Unplugged by David Filo and Jerry Yang. Yahoo! is one of the most popular and well-respected indexes of the Internet and in particular the World-Wide Web. It is a manually maintained index which, unlike competing services that are automatically indexed, offers a well-designed hierarchy of subjects as well as human filtering of sites so that only completed sites with useful, substantial content are included. A Web site with the picture of the creator and his or her name and nothing more is not going to get into the Yahoo! index in general. While Yahoo! may have a superb product on which advertisers appear to be clamouring for space, by looking at recent increases in the number of adverts on the site, it is unclear what the motivation for producing a book containing a small selection of the entries in Yahoo! could possibly be. Sure, the book comes with a CD-ROM containing more than 80,000 sites indexed and searchable off-line without incurring on-line charges as well as a copy of Quarterdeck Mosaic which some would say is worth more than the book. But, still the logic seems strange. The book is not a hands-on introduction to the Net. Introductory material about the Internet, the Web and surfing the Web amounts to less than 20 per cent of the book and the listings account for the rest of the space. At the same time, Yahoo! Unplugged is not a subject-specific guide to Internet information. Instead, it competes head to head with numerous other yellow pages-type guides as well as with its own on-line counterpart which wins the race hands down. After all, even with an aggressive three month development cycle for the book, the number of new Web pages probably numbers in the hundreds of thousands since the material included in the book became final and the number of new entries in Yahoo! could easily be more. This is not to detract from the work which has gone into the book. Authors Filo and Yang are well-known as the minds behind Yahoo! which started as little more than a student project by the two at Stanford University and now has grown into a successful commercial venture. In addition, the book is not simply a printout of the information on the Yahoo! Web site. The listings in Yahoo! Unplugged provide brief assessments of each site and recommendations. The most effective judgment of a site comes from personal experience. Users would be better off spending the US$40 in on-line time and checking out Yahoo! for themselves.