Mobile management is the way of the future. Statista estimates that by 2021, mobile e-commerce will make up 54% of U.S. e-commerce sales, making effective mobile sites a vital element for e-commerce companies. To find out which e-commerce mobile mistakes should be avoided to stay relevant, I asked a panel of entrepreneurs from YEC the following question: What’s one mistake you often see on mobile e-commerce sites that companies must work on fixing to stay in the game? Their best answers are below: 1. Ignoring the one-finger rule If your add-to-cart or checkout buttons are so small that they require the user… This story continues at The Next Web