Facebook served 16% of all display ads in Q1 of this year, according to comScore, making it the largest online display ad publisher in the US—handily beating #2 Yahoo, reports ClickZ.
Facebook’s growth is impressive whether compared to its Q4 numbers or Yahoo’s numbers. In Q1, Yahoo’s properties saw 132B impressions (12.1% of all online display ad impressions). In Q4, Facebook served about 115B impressions. In Q1 of this year, Facebook served a whopping 176B impressions: a 53% increase over its previous quarter. (Yahoo saw a slight decrease from Q4: down from 140B impressions, or 6%, and all other major ad players also saw declines.)
Last year in Q1, Facebook served 70B ad impressions, which means they increased their ad impressions by over 150% YOY.