Amazon, the king of ecommerce, has long been a trailblazer in the world of online shopping. But now its business model is rubbing off on retailers, and changing the way we shop in traditional brick-and-mortar stores. Amazon Prime is a paid loyalty program that costs $99 or $10.99 a month and grants members many benefits, including free two-day shipping and access to stream online videos and music. Roughly 49 million American households, or 44% of households in the U.S., have Prime memberships, according to Cowen & Co. data. That’s nearly triple the number that had subscribed in 2012. The success of Prime has left traditional brick-and-mortar stores desperate for a way to keep customers coming into stores. So far, their best effort has been simply to copy Amazon. Read more at Business Insider.