Online sales rose 15 percent last year, according to the US Commerce Department. About 9 cents of every dollar spent at retail is now spent online. In this hour, how do you decide when to shop online and when to shop in a brick-and-mortar store? Are there certain items that you have to see in-person before you make a purchase? Sylvia Long-Tolbert, assistant professor at the Johns Hopkins Carey Business School, gives us insight into consumer behavior … and how stores are fighting to hold our attention. Plus, how are malls adapting to the rise of online shopping? Melody Simmons, of the Baltimore Business Journal, updates us on development in our region, including the trend to open-air plazas.