This handout image courtesy of TIME shows the December 27-January 3, 2010 cover of the magazine featuring Facebook founder Mark Zuckerberg. In the most anticipated issue of the year, on sale December 17 and available now on TIME.com, TIME names Facebook founder and CEO Mark Zuckerberg the 2010 TIME Person of the Year. Zuckerberg, only 26, is the second youngest person named to the cover of Time's ritual annual. [Xinhua/AFP]