Build an Online Store

For build an online store I prefer many kind of things in it which a customer will attracted when they open a site...customers usually attracted when we give them a multiple online store like everything is available in one store..shopping carts, food items,clothes,rent cars,jobs opportunities,gaming,social networking,bank information,e commerce setup,credit card, amazing range,special offers all of the things which buyers wants to buy from our store...if we have all the things in one place no buyer can go any other place..