Mark: "Imagine a virtual world where we control what you see, and everywhere you look - ads. Ads sold by facebook. Ads hidden as objects, events, and even jus

Mark: "Imagine a virtual world where we control what you see, and everywhere you look - ads. Ads sold by facebook. Ads hidden as objects, events, and even just displayed on a virtual wall when you virtually walk past. A virtual world where everything is an ad someone paid for."