coupons are confusing

(Groupon)

Groupon’s “Salebration” Leads To Confused, Voucherless Customers

Groupon is running a shady deal, readers told us. They recently sent a 20% off coupon code to customers, promising 20% off a local deal. Neat. Jenny nabbed three $12 vouchers for a local store, spending only $18. Yet her 20% coupon only got her a discount of $1.20. She was disappointed that it was only taking ten percent off, and complained to Groupon and to us. The deal, it turns out, wasn’t shady at all. [More]