Can be used to describe the unintended consequences of a promotion or discount running on the popular Groupon website.
This generally happens when the promoter hasn't thought through their idea, or doesn't expect it to be very popular. If it turns out to explode in popularity it can see them failing to deliver on the offer, or even cost them a loss.
"Headline: Baker Has to Make 102,000 Cupcakes For Grouponers", man she got groupwned!
November 22, 2011