Google has unveiled the so-called “half-page” 300×600 unit for AdSense, claiming that one of the top requests from publishers in the last year has been for larger ad sizes in AdSense accounts.To put it in perspective, see the above graphic. The half-page is that tawny-colored box in the center, offering as close to a full-screen takeover as a display ad can.

via Google Unveils Half-Page Unit For AdSense – MarketingVOX.