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 Facebook Buys Virtual Reality Device Maker In Bet On 'Platform of Tomorrow' Mark Zuckerberg Says There May Be Advertising In Virtual World By Cotton Delo, Published on March 25, 2014 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. Become a Member Already a member? Log in.