Twitter has announced that it will be adding in-stream Promoted Tweets to its Twitter for iPhone and Twitter for Android mobile apps–an important step given that more than half of active Twitter users access the platform via their mobile device. To date, iPhone and Android mobile users have been exposed to Twitter’s Promoted Products only via the search function–search for a topic and a Promoted Tweet is likely to appear at the top of the search results. With the most recent app updates, however, Twitter now is including the ability to see Promoted Tweets as part of the user’s stream. Read →