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 Twitter Times IPO as Facebook's Fortunes Rise As It Preps to Go Public, 140-Character Company Less Likely to Be Plagued by the Mobile Doubts That Lingered Over Last Year's Marquee Debut By Cotton Delo, Published on September 16, 2013 0 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. Register Now Already a member? Log in.