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 Will Tim Tebow's Pro-Life Bowl Ad Kill His Potential as an Endorser? College Football Star's Beliefs Could Scare off Some Marketers, Experts Say By Rich Thomaselli, Published on January 26, 2010 36 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.