Social networks accounted for 21.1 percent of all online display advertising impressions in the US as of June, with Facebook reaching the most unique visitors. For the month, nearly 70 billion impressions reached some 130 million unique visitors, according to a comScore report released yesterday. Out of those numbers, most of were split between MySpace and Facebook.
While MySpace had 30 billion impressions that reached 65.5 million unique visitors, Facebook had fewer impressions but more users who saw the ads — 27 billion impressions for 67.4 million unique visitors.
We took a deeper dive into how gaming companies are taking advantage of this advertising inventory to find more gamers, see our report from earlier today. Companies like Zynga are now some of the largest advertisers on social networks, according to the comScore data.