How trustworthy is the feedback from these dissatisfied businesses? People have a strong tendency to blame others for their problems and this case is no differ

How trustworthy is the feedback from these dissatisfied businesses? People have a strong tendency to blame others for their problems and this case is no different. Groupon and its "disloyal" customers are an easy scapegoat for the business' own problems. Groupon just brings customers in, they don't magically make the business better. When analyzing the effectiveness of Groupon we should be most concerned with how well businesses with a good product or service did using Groupon.