Every page on your site should have only 1 thing that you want a visitor to do. It’s what we call “One Page, One Job.”
So what is the action that you would like for your visitor to take when they visit your website?
Answer that question, and then go to this site http://browsersize.googlelabs.com/
type in your URL and is that one thing you want your visitors to do clear in at least the 80% area?
If you make this a reality on your site. You will see a lot higher conversion rate on your site.
Hope this helps!