At the very peak of that asinine late 90s Beanie Baby craze, a local gift shop got a lot of publicity by loudly announcing they were discontinuing selling them.
The shop sold tons of beanies, but their core business had been utterly disrupted by callers (often little kids) wanting to know whether the latest hot beanie was in stock. Phones rang all day. The shop's loyal clientele wanted higher end statuary and the like and there was often no clerk available to wait on them.
It was a brilliant move by the shop to drop the disruptive beanies which would go the way of the pet rock a year later.
Around that same time McDonalds gave away mini-beanies. There was a limit on how many a customer could get. So people would buy a happy meal or two, get the beanies, and circle around the drive-in... again and again. Many hoped to sell them on Ebay.
I made the mistake of trying to grab a quick bite during that riot. I was infuriated by the disruption the beanie promotion caused.
This is the sort of disruption some Groupon sellers will face. And yes, many of the unwashed coupon crowd will move on to the next one-shot bargain.
Am I the only one here old enough to remember when trading stamps were huge in marketing in the mid-60s? (Top Value, S&H Green Stamps, Plaid Stamps etc). A forgotten fad now. At their peak they were far hotter than Groupon.