In most of my groupon experiences, things have gone smoothly. Its a great way to try new things without spending a fortune. Some vendors are a little shady however when it comes to honoring the Groupon. Ive only had problems when the Groupon is expired. It clearly says the Groupon should be worth the value you paid for it, but some vendors will just tell you that youre beat or theyll give you a discount that is still less than the value you or the person who gifted you the Groupon paid, and thats only after you negotiated with them. My advice is to only buy Groupons when youre planning to use one. Only gift one to somebody when you are sure they will use it. Otherwise, you could just be throwing money out the window. But, on the other hand, use it correctly and itll open up so many great experiences.