They did a Super Bowl ad (at obviously significant expense): http://www.groupon.com/blog/cities/groupon-super-bowl-ads/ http://www.groupon.com/blog/cities/group

They did a Super Bowl ad (at obviously significant expense): http://www.groupon.com/blog/cities/groupon-super-bowl-ads/ http://www.groupon.com/blog/cities/groupon-super-bowl-ads/ Wasn't regarded as a big success though: http://allthingsd.com/20110207/groupon-back-peddles-after-viewers-fail-to-see-the-humor-and-the-compassion-in-their-super-bowl-ads/ http://allthingsd.com/20110207/groupon-back-peddles-after-vi...