Popular Daily Deal sites typically resell your deep discounts offer to their customer list. When someone buys your deeplu discounted product the Daily Deal site then charges you a high fees for processing, leaving you with big loss in revenue.
Krowd gives you more flexibility at a much lower price.
So you ran a successful deal. You acquired new customers and they shared the deal with friends. Great job! Don't let it end there though! Survey these new customers. Ask them to write a review and share their experience with friends. This produces an ever-increasing number of new and happy customers, which also reduces the need, or scope, of future deals.