When you design a web page for your web site you should think about the time and energy that the average user will put into viewing your page. Remind yourself that while you are spending a great deal of time on the page and appreciate the whole, this is not the experience of most users. In fact it is amazing when you learn how little of the average page the average web browsing user actually sees. A really great explaination and treatment of this factor was posted as a commentary on internetnews.com a while back. Luckily the article seems to be living on for quite a while.
Check it out and definitely check out the graphic that shows the heat diagram that illustrates where users look on a page.