You're a designer right, so surely you know about the 'fold'? All your main content should be above the fold and secondary content, or not as important content (on a hosting site, stuff like news etc) should be below the fold, unless there is space left over from the main content above the fold. The fold by the way is the line where the browser window reaches, so go on the top sites and look at where the content is positioned. It's above the fold, and normally within the golden ratio (which means that say the main content box should be ~1.6 the size of the secondary sidebar).

