I use groupon and similar services (LivingSocial, some more local sites) constantly. It is a GREAT way to both save money and to discover new things. I feel like the author is being a little overly harsh on Groupon when: A) He admit's he should have done the back-of-envelope math to determine it could be difficult to get the dentist appointment. B) He had no issue getting a refund.

I know we are a society of convenience, but are we really at the point of boycotting and writing rants to influence other's to follow simply for being slightly inconvenienced with no direct financial loss?