This online encyclopedia works well for several reasons, but most importantly because of the excellent souped-up WAIS engines incorporated into the database, the inclusion of all of the text and [essential] graphics from the original, plus the addition of new facts and files and the rich variety of pointers to other Internet resources. No other encyclopedia in print or on CD-ROM comes close to this work, in its ease of use, comprehension and sheer utility. Once you start using it, there seems to be no limit to your explorations online. The word "serendipity" might have to be redefined as meaning "like using the Britannica Online, as to follow your imagination wherever it goes."...
I tried [a] search on one of my favorite test topics for an Internet search engine, "trilobites." I was amazed at the amount of information that Britannica Online contained about one of my favorite extinct arthropods. The information appeared at several levels, from specific genera of these long-gone creatures to general articles on geology and paleontology where the remains of trilobites are still important tools to correlate strata. I would never have...expected Britannica to contain such a rich texture of information, detailed for my most exacting needs, yet general for a cursory read. The nature of Britannica's information makes it unique, valuable and simply fun to use. There is nothing else that comes close to it.