Social Media Survey: Americans widening their social media use According to a survey conducted by the Pew Research Center, Facebook isn’t growing, but Pinterest, Instagram, LinkedIn and Twitter most certainly are. By Matt WilsonJan. 13, 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.