What is the fine-grained topic of the following text: Terry Jones (Travelocity), Emily Drennen (Lancaster DoubleTree Resort) and Darlene Rondeau (Leonardo) discuss how mobile has changed the travel shopping experience, what visuals travel shoppers want to see, and what happened once the Lancaster DoubleTree Resort switched to an image-driven website. Only return the topic.
The impact of mobile and visual content on the travel shopping experience.