I think we're going to see companies experience more success with coupon/discount services such as LevelUp that encourage repeat buyers and increase customer loyalty. I feel that type of business model is going to provide greater benefit to companies engaging in group discount programs than the Groupon or LivingSocial approaches.http://www.dailydealmedia.com/428levelu-better-idea-than-groupon/
Thanks for sharing a list of successful daily deal websites. Hope to see more in future.Find some Great Deals at www.locatebaltimore.com .
Coupons and daily deals are the best option of online portal managers to attract the customers.