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 Seeks $1.4 Billion in Biggest Web IPO Since Facebook Conservative Pricing In Hopes Of Avoiding Facebook's Year-Long Swoon , Published on October 24, 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. Become a Member Already a member? Log in.