At this point, you know that you have to be on mobile because that’s where your customers are (60% of online shopping time is now spent on mobile, according to comScore.) And you also understand that it’s important to make your refer-a-friend program accessible everywhere, all of the time, so that anyone who interacts with your brand can help you acquire new customers. But…exactly how important is it to have your referral program available on mobile web or in your app....