Individuals who are new to website development will often compartmentalize the web page and fill every available space with either text or graphics. After all, why shouldnt you maximize the site design by including as much information as possible?
There seems to be an underlying fear that if there is white space the website will look incomplete. The term white space is a common term in publishing. For instance when a newspaper is developing an advertisement they will seek to allow for some areas of the advertisement to be free from text or graphics. Most publishers have learned that white space provides a sophisticated look while drawing attention to a very specific selling point.
The best way to describe it is to use music as an example. There are times when musicians will use a very roots-oriented approach to their music. They may sing with only a guitar. This approach of stripping away everything else helps the listener experience a more intimate encounter with the music. Sometimes adding more actually reduces the overall effectiveness of the music or, in the case of web design, the message.
If your online visitor has to take a significant amount of time...