Marketers of everything from apparel to dog snacks and cleaning supplies are getting in the subscription delivery game, bringing a bounty of hand-selected products right to the consumer’s doorstep. Review sites and Pinterest pages devoted to the trend have popped up and retail giants like Target are jumping in. Why is this catching fire now? For starters, both the impulse purchase and the sport of shopping were impacted by what turned out to be a deep recession, making the home delivery of goods all the more appealing, says senior retail analyst Marshal Cohen of NPD Group. “Who doesn’t love getting a box of surprises, but without the commitment of having to keep it?” he says.