
Coupons that follow you?
Sounds like a good way to track people then. Just hand out unique coupons to everybody. Given that a large percentage won't be redeemed, especially if the deal isn't terribly good but enough to keep around for a rainy day, it won't be too expensive. And even tracking who keeps the coupons and who doesn't is valuable information. Yes, I can see this is made of facebook win... bitch.