Social Media How AmEx uses content to build community and brand loyalty Small-business owners can tap into American Express’s global community—Open Forum—for information and professional connections. By Matt WilsonOct. 26, 2010 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.