Facebook will grow its net US display revenues this year by another 80.9% to $2.19 billion, eMarketer estimates. This will push it past Yahoo! to become the No. 1 display ad-selling company in the country. This near-doubling of display ad revenues is actually a slowdown in growth for the social networking giant, which posted triple-digit display ad revenue growth in 2009 and 2010 when its display revenues were at relatively low levels. Next year, growth will slow further to just 31.3%. “Facebook’s supreme popularity—both in terms of numbers of people and amount of time they spend there—creates a plethora of display ad impressions, mainly for its unique form of banners,” said David Hallerman, eMarketer principal analyst. “And that popularity is also boosting what advertisers will pay for its display ads.” Get the full story at eMarkter