Buyers are becoming much more demanding when they shop online these days. And when merchants aren’t bringing on new features to match those buyer expectations, shoppers shift their purchasing interest to sites that do. The rub, however, is that more often than not, eCommerce vendors can’t provide new functionality at the pace that merchants need it. So considering that consumers are an impatient bunch, what's an online merchant supposed to do?   One option is to add new functionality through the use...