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 Spirit Airlines Hit With $50K Fine for Violating DOT Ad Rules Too Many Steps Between Tweet for $9 Tickets and All the Fine Print and Conditions By Ken Wheaton, Published on November 21, 2011 1 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.