I know some of Living Social's original investors, and I approached them for an investment in my startup about 8 months ago. Part of our pitch was that daily deals solve and amazingly valuable problem in an inherently not-valuable way, and although our system would take less of a straight line, it would and already WAS solving the problem for a small subset of businesses in a more valuable and vastly more sustainable…
Do you think Daily Deals are a fundamentally flawed concept? I tend to think there's nothing wrong with them other than an over-saturation of the market and a prevailing attitude that says all you need is a sufficiently large mailing list to win. But that's just my outsider's view.
These can bring in a short term influx of customers but unless the small business has some sense about how to convert those "daily deal" people, it's just blowing money.
In the end, daily deal sites are just another marketing channel. It helps to bring people in but if you can't convert, your ROI will ultimately be negative. This isn't something that small businesses can't understand, it is just not how they view these sites... they only see dozens and dozens of people coming in the door.