Social Media Social media platform changes brands should know Pinterest—along with Facebook and Twitter—is introducing changes that will affect brands and how they engage online. By Beki Winchel@bekiwekiFeb. 16, 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.