In this enduring quest for engagement, one aspect of buying and selling continues accelerating: e-commerce. According to eMarketer, the U.S. currently has 217 million online shoppers – more than 66% of the total population. How can marketers best tap into the e-commerce boom? Ironically, the most effective route to engaging online consumers lies in marrying a 200-year-old marketing tradition with e-commerce. Called e-commerce product sampling, it’s being adopted by leading brands and retailers.