of companies use this promotional tool as the benefits offset the negative aspects of it.
References
Belch, George & Michael. (2015). Advertising and Promotion: An Integrated Marketing Communications Perspective (10th ed.). New York, NY: McGraw Hill.
Brown, C. M. (2011, April 25). 10 Pros and Cons of Using Groupon. Retrieved from http://www.inc.com/guides/201104/10-pros-cons-for-using-groupon.html