Content Marketing Buzzfeed and Twitter seek to turbo-charge content marketing A change to promoted tweets and a new tool that analyzes how articles are shared across social media could bolster brands’ online efforts. By Beki Winchel@bekiwekiMay 1, 2015 SHARE To read the full story, log in. Become a Ragan Insider member to read this article and all other archived content. Sign up today Already a member? Log in here. Learn more about Ragan Insider.