So your BFF work friend cc’d you on that super cool Groupon and you bought in with everyone else and then a little bit down the road, regret sits in. Maybe you remembered you hate fondue. Maybe the restaurant was closed for rats when you got there. Maybe you realized you would much rather have the money for your upcoming cross-country skeeball championship. Well, you’re stuck, right? Not so. Enter Lifesta, a clearinghouse site where you can buy and sell unused Groupons, coupons, discount packages, or vouchers.