Twitter sharpens ad targeting by sifting through tweets

By way of Gerry Shih SAN FRANCISCO (Reuters) – Twitter Inc on Wednesday unveiled a brand new device that allows marketers to disseminate centered messages in accordance with the content material of users' tweets, a technology that would assist raise Twitter's effectiveness as an advertiser to a rarefied stage proven simplest by using digital advertising leaders like Google Inc. Twitter's advertising business is somewhat modest and is likely to generate 2013 international income of beneath $600 million, in keeping with the consultancy eMarketer. …