Twitter will earn $139.5 million in global ad revenues this year, up 210% from $45 million in 2010, according to a new forecast from eMarketer. By 2013, eMarketer estimates worldwide ad revenues at Twitter will reach nearly $400 million.
This forecast features a slightly lower 2011 ad revenue estimate than eMarketer’s previous estimate from January 2011—a result of Twitter’s slower-than-expected rollout of several advertising initiatives, including ad sales offices in markets outside the US and a platform enabling advertisers to buy ads on a self-serve basis. In January, eMarketer forecast that Twitter would have $150 million in ad revenue this year.
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Ninety-six percent of Twitter’s ad revenues will come from the US this year, eMarketer predicts, falling to 88% by 2013 when ad dollars from elsewhere in the world will make up a more substantial revenue stream. Twitter’s US ad revenues will still more than double during that time period, rising from $133.9 million this year to $351.6 million in 2013.
