They do have plans to put these promoted tweets in users' timelines... From AdAge (http://adage.com/digiconf10/article?article_id=143237 http://adage.com/digic

They do have plans to put these promoted tweets in users' timelines... From AdAge (http://adage.com/digiconf10/article?article_id=143237 http://adage.com/digiconf10/article?article_id=143237): During this roll-out, Twitter will study how resonance works and decide in the fourth quarter whether -- or how -- to take ads beyond search and into users' Twitter feeds. "Is it great in search and horrible in the timeline? We are going to test and test and test," Mr. Costolo said.