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 Study: Facebook Sharing Trumps Twitter, LinkedIn, E-mail What's a Tweet Worth? To Ticketing Startup Eventbrite, Exactly 43 Cents By Irina Slutsky, Published on October 14, 2010 11 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.