You’ve read all of your free items this month. To register, get added benefits and unlimited access to articles, Become a Member. Already a Member? Sign in. Advertising Age Article Abstract Four Things Mark Zuckerberg Should Tell Every CMO The Biggest Mistakes Marketers Make on Facebook By Michael Scissons, Published on August 18, 2011 33 Want more Access, Content & Connections? Upgrade to Membership. We are glad you are enjoying Advertising Age. To get uninterrupted access and additional benefits, become a member today. Become a Member Already a member? Log in.