Advertisers can bid for above the fold ad slots The latest feature, available today on Google's Content Network, allows advertisers to bid only on ad inventory appearing within a user's browser window when a page loads, without requiring her to scroll. It allows ad buyers to exclude ad space outside the frame by selecting a "below the fold" exclusion. Google expects the exclusion will result in higher prices for "above the fold" placements, as brand advertisers bid against each other for those more desirable placements. "Above-the-fold" ad targeting is not new. Other ad networks and Web sites have offered it, but the designation can be a sloppy one. For instance, it may include the top one or two ad slots on any given site, regardless of their exact position or the vagaries of screen size, screen resolution, and browser type that can influence the layout of a page.
Extremely good feature. More competition among the adword advertisers for a site, more money the adsense publisher makes.