AT&T, Yahoo Top March Display Ad Rankings

Yahoo Sites (YHOO) - which racked up 42.8 billion US ad views in March 2009 - ranks as the top display ad publisher for the month, while AT&T (T) is the top display advertiser, capturing nearly 6 billion ad views, according to data from the comScore Ad Metrix service.

Top 10 Online Display Ad Publishers

comScore reports that Yahoo Sites captured 13.2% market share of the more than 324 million ad views overall and reached 139 million people online in March. Fox Interactive Media (NWS) ranked second with 31.4 billion ad views (9.7% share), while social networking site Facebook.com captured the third spot with 24.8 billion ad views (7.7%). Microsoft Sites (MSFT) placed fourth.

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Top 10 Online Display Advertisers

AT&T, which ranked as the #1 display advertiser based on ad views, captured 1.8% market share, and reached 147 million people online. A significant component of AT&T’s display ad campaigns in March was the promotion of free camera phones, including the Sony Ericsson W350.

Other top display advertisers included Verizon (VZ), with 5.7 billion ad views (1.8% share), Vonage (VG) with 4.3 billion ad views (1.3% ) and Scottrade with 4 billion ad views (1.2%).