Online sales are growing at about three times the rate of those from brick-and-mortar stores, in part because of the popularity of free shipping. But that’s led to a big problem: an explosion of online returns. Almost a third of web orders end up being sent back, vs. 9 percent of purchases at physical stores. The expense of processing and shipping boomeranged items can range from 20 percent to 65 percent of an e-tailer’s cost of goods sold, says United Parcel Service Inc. So web merchants are seeking ways to make returns less costly. Read more at Bloomberg.