Halunen & Associates is a class action law firm that is investigating Groupon for violating certain laws that make it illegal for a company to sell gift cards that expire after a certain period of time. The goal of the investigation is to determine whether Groupon customers may be entitled to reimbursement for expired gift cards. You can get more information and contact them through their website here: http://www.halunenlaw.com/news/2011/01/07/430/. read full review »