It has been proven by
Jakob Nielsen that the most most common web reading pattern used by visitors looks like an F. This means that when a visitor first gets to your site they read across the top content area in a straight line (__). Then on they move to read the middle section, again in a straight line (__), but not for long. Finally your visitor will then scan the left side of your website page which forms the branch of the F (|).
So how is that important you ask? Well as you may know most web surfers don't actually read content - they scan it. So how you have your website content laid out will greatly affect the information a vistor actually scans.
So to get your great content read, your first two paragraphs...