Cool article from Mozilla labs on some new Firefox New Tab Page which uses something called a "Cognitive Shield".

No matter where we put the links to your most visited sites (and their latest news), it always seemed to be a distraction, based upon our own perception and the feedback from thousands of testers. Given that the bulk of those testers are multi-tasking-adept early adopters, we’d expect that feedback to be even stronger from more mainstream users. Our original thought was to place the links along the bottom of the page — outside your foveal vision. In practice, the peripheral vision proved too strong, and the links still drew your eye and interrupted your cognitive flow.