Groupon is a discount voucher site and I have always found the Terms and Conditions to be clear and transparent. I have bought vouchers on about 30 occasions for everything from meals to cinema membership and have never had any problem redeeming them. On one occasion I cancelled a purchase (within a day of buying it) as it was for a weekend break and the company had no dates left to suit me. This was refunded onto my credit card within 5 working days and I had no need to contact Groupon further. I think if you take the time to assess the deal, read the T&C's and then decide whether or not to purchase you should have no problems with them at all. Read the small print people before you start crucifying a perfectly good shopping experience!