Share 'Groupn/Daily Deals'

Hi all, Just wondering who has run a groupon or such type deal? Would like to hear your feedback. I am familiar with the pluses and minuses but since I am considering it, id love to hear what type of deal you ran and how it turned out for you before I decide to go ahead and if I do before I negotiate with them. I don't expect to make money but look at it as more of an advertising/customer acquis…