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"Kevin Weil, Senior Director of Product Twitter has announced at TechCrunch Disrupt in New York today that any user in the United States can now access its advertising tools, such as ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/twitter/2013/04/30/twitter-ads-service-is-now-available-to-any-user-in-the-us-offering-promoted-accounts-and-tweets/>