Over the past six months I have had several clients ask about or share their experience with group buying sites such as Groupon and LivingSocial. Personally I have never purchased a Groupon or Living Social offer. Some of the deals I've seen offered are up to 90% off. This is a great deal for the customer, but what about the business itself... In this article the Wharton School of business takes a closer look at group buying. Is it here to stay? Should your business use group buying? Please share your thoughts and experiences.