If you haven’t taken advantage of VIPsDeal service, here’s how it works. These deals seem to be a win-win: The consumer gets a substantial saving, and the establishment gets an influx of business. But it isn’t quite that simple. While the companies that run the deals tout their successes, there is some controversy surrounding the programs. Some participating retailers see a dramatic increase in business, especially when the deal is first offered — so dramatic that they cannot handle the volume. Some marketing observers suggest that the volume is, in fact, short-lived; they claim deal-hungry consumers are unlikely to be repeat customers.