Earlier this summer, Facebook reached its 500 millionth member. While the social network’s massive user base receives a lot of attention, its ad revenue is equally significant. This year, Facebook will receive more than $1 billion in ad revenue and is poised to receive $1.7 billion next year. MySpace, on the other hand, can barely retain its advertising. The social network will bring in $347 million in ad revenue this year, a 26% drop from 2009.
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