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 How Do You Measure Returns on Investment in Ad Tech? We Can't Be Obsessed With Clicks and Ignore More Nuanced Data By Adam Lehman, Published on August 31, 2012 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.