Combined with other reports about your visitors, you will be able to take a small glimpse into the mind of the users that come back to your site for more. This will help you see what, if any, changes need to be made to the content, design or advertising in your site to help you better reach any conversion goals that you may have set.
Be sure to check out the other articles in this series to learn more about your visitors and how using Google Analytics will help you better serve them while in turn creating more profit for you.