If you get ripped off as I did by a company, Groupon doesn't allow on-line reviews. They only have a compilation of reviews they choose. So, you can't tell others to avoid the said products. Additionally, they solicit a review via email for everyone, so the autopilot people make even the worst company's have a 70% positive review. Or maybe some reviews are given for free products. Anyways, they create to artificial market place where everything seems positive, until you get RIPPED OFF. Amazon is so much better at this.