But as some marketers flee traditional media, they still encounter challenges. Commercial clutter is rampant. The average city dweller is exposed to an estimated 3,000 to 5,000 ad messages a day. Short-form video content and ads appear at gas stations, grocery stores, doctors’ offices, and big-box retailers. Supermarket eggs have been stamped with the name of CBS programs; subway turnstiles carry GEICO’s name; Chinese food cartons promote Continental Airlines; and US Airways has sold ads on its motion sickness bags. Dubai sold corporate branding rights to 23 of the 47 stops and two metro lines in its new mass transit rail system.