You’ve read all of your free items this month. To register, get added benefits and unlimited access to articles, Become a Member. Already a Member? Sign in. Advertising Age Article Abstract The Hottest Trend in E-commerce? M&A Here's a Primer to the Retail Category's Alphabet Soup of New Online Sales Channels By Natalie Zmuda and Kunur Patel, Published on May 30, 2011 4 Want more Access, Content & Connections? Upgrade to Membership. We are glad you are enjoying Advertising Age. To get uninterrupted access and additional benefits, become a member today. Become a Member Already a member? Log in.