I know Paypal is most popular money exchange and transaction making website in entire world, but for Indian users its meaningless.
Limitation of this website for Indian users: -
You cannot add money, if you are a customer of local government banks. So no shopping to international ecommerce websites.
Charges for transferring money is way too high.
Improper customer support facility, I had trouble adding debit card into this website and no one helped me out with this.