I think Retail me not is a great idea in the world of online shopping.

The basic concept is simple - remember all those “Enter your coupon code here” text boxes when you shop online ? Well, I always wanted to but could never knew how to find a code or what promotions were current and active for a given online shopping portal at present.

RetailMeNot.com solves this problem in a brilliant fashion - by deploying a community ! Avid shoppers post and exchange information related to coupon codes for each website and even vote on each posted coupon code to tell others what coupon codes worked for them !

Also, I like the home page with a tag cloud. It looks like a one-stop shop to find out all the hot online deals ! Needless to say, the three most used tags are - Clothing, Computers and Business