How does Groupon work?

Lots More Information

Groupon. "About Us" (Accessed June 28, 2011) http://www.groupon.com/about
Groupon. "Groupon Privacy Statement" (Accessed June 26, 2011) http://www.groupon.com/privacy#when-and-why-groupon-discloses-personal-information
GrouponWorks. "Grouponomics" (Accessed June 25, 2011) http://www.grouponworks.com/
Malone, Noreen. Slate. "My Groupon Week." June 28, 2011 (Accessed June 28, 2011) http://www.slate.com/id/2297775/
Mitchell, Dan. CNN Money. "Study offers grim news on deal sites like Groupon." June 16, 2011 (Accessed June 26, 2011) http://tech.fortune.cnn.com/2011/06/16/study-offers-grim-news-on-daily-deals/
National Public Radio. Talk of the Nation. "Deal Sites Like Groupon Change How We Shop." February 22, 2011 (Accessed June 28, 2011) http://www.npr.org/2011/02/22/133966410/deal-sites-like-groupon-change-how-we-shop
Ovide, Shira. The Wall Street Journal. "Groupon IPO: It's Here!" June 2, 2011 (Accessed June 28, 2011) http://blogs.wsj.com/deals/2011/06/02/groupon-ipo-its-here/
Tuttle, Brad. Time. "The Backlash against Online Daily Deals." July 20, 2011 (Accessed June 28, 2011) http://moneyland.time.com/2011/07/20/daily-deal-backlash/