Computer and consumer electronics, as well as apparel and accessories, account for the bulk of US retail eCommerce sales. Combined, they will contribute 42.9% of total retail eCommerce sales in 2013, rising to 45.6% by 2016. At the other end of the spectrum, large retail categories like auto and parts, as well as food and beverage, have disproportionately low sales online, indicating a lot of room for eCommerce growth. These categories, purchased largely offline, also contribute to online retail’s limited share of total sales. Read the rest at eMarketer.