I love the idea here, but I really wonder what incentive people have to tip (especially if it appears others are tipping). It's great that you've measured a ~10

I love the idea here, but I really wonder what incentive people have to tip (especially if it appears others are tipping). It's great that you've measured a ~10% tip rate, I hope it stays up there. But it seems like really fertile ground for a free rider problem. Do you have plans for that if it manifests itself?