They promise you too many things: cashback, free membership, free shipping, none of these materialize. When I contacted the customer care, they said they are not for all users, they decide who get the benefits by a lucky-draw, lottery!
Now, these were no where readable in the page, when I ordered. May be written in a T&C somewhere, who bothers to read that.
It is very frustrating that these cheating tactics are entering the Indian E-commerce space. In one way the e-commerce space is led by highly professional companies like amazon and flipkart, and in the other hand these thugs.
I will appeal to the authorities to control these companies before they spoil the cyberspace and turn it into a chor-bazzar.