The hierarchical structure of the pieces of information should not be too shallow or too deep, again depending on the information on hand and on the purpose of the presentation. His work is concerned with data and information visualization, Web browsers, image processing, data organization, and analysis of medical, environmental, and other multidimensional data. He pursues research in the use of understanding of the perceptual system in improving the visualization process and dealing with information. Andrew Glassner Web pages are pictures. These pictures often include smaller images, pieces of typography, and now moving images and sounds.
Web pages are advertisements.
The nature of the web is that people surf casually, and if you want them to read your material you need to get them to stop at your page. To do that, you need to get their attention, and promise them a rewarding experience. First impressions matter. Magazines work hard to make attractive covers, and web page designers do the same. Even if a page is simply reference material, if it's poorly organized or difficult to read, people will not enjoy the experience, and will either not return or regret it when they must.