Across on my mind that it will be very nice to build distributed API so eventhough merchants already have their online webstore, they still can be merchant member in 40sale.com.

this feature connect their product page to their account in 40sale.com seamlessly. Users can query discount from the main page of 40sale.com and registered users can add to their wishlist while they browse merchant webstore. Bhinneka.com and glodokshop.com will take advantage from this feature.