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<http://gigaom.com/2013/04/17/with-new-twitter-ads-product-you-are-what-you-tweet-to-advertisers-anyway/twitter-targeting-2/>
<http://gigaom.com/2013/04/17/with-new-twitter-ads-product-you-are-what-you-tweet-to-advertisers-anyway/twitter-targeting-2/>