Beware - Spontaneous Purchase. I'm a shopper that adds items to my cart and visits later to narrow down my selections. Today, my cart has close to $2000 in items and I was absolutely not using the app, or even my phone. I then received an email confirmation for $2000. I was refunded, so all good but Groupon had no interest in investigating a glitch, they were dismissive of my concern. So beware, I hope this doesn't happen to you.