White Space - A Perfect Option for Improving Usability in Web Designs: http://usabilitygeek.com/white-spaces-i…

There aren't any novel concepts in this article, but I think it's always worth emphasizing that white space is an undeniably powerful — and often overlooked — tool in design. Although increased gutters and margins may push elements below The FoldTM (which can't be accurately defined anyway), they offer visual relief and thus more dramatic clarity in priorities, like calls-to-action and headlines.